Home / 121,720,782,165.67-167,904,891,081.78-75,915,534,030.15

Finding the Fourth Proportional to 121,720,782,165.67, 167,904,891,081.78 and 75,915,534,030.15

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Solution

The fourth proportional to 121,720,782,165.67, 167,904,891,081.78 and 75,915,534,030.15 is: 104,719,910,979.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,720,782,165.67 : 167,904,891,081.78 = 75,915,534,030.15 : x
  2. Step 2: Convert to fraction form
    121,720,782,165.67/167,904,891,081.78 = 75,915,534,030.15/x
  3. Step 3: Cross multiply
    121,720,782,165.67x = 167,904,891,081.78 × 75,915,534,030.15
  4. Step 4: Simplify right side
    121,720,782,165.67x = 12,746,589,472,747,497,193,472
  5. Step 5: Solve for x
    x = 12,746,589,472,747,497,193,472/121,720,782,165.67
  6. Step 6: Final answer
    x = 104,719,910,979.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.