Home / 121,899.71-168,186.57-70,207.23

Finding the Fourth Proportional to 121,899.71, 168,186.57 and 70,207.23

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Solution

The fourth proportional to 121,899.71, 168,186.57 and 70,207.23 is: 96,865.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,899.71 : 168,186.57 = 70,207.23 : x
  2. Step 2: Convert to fraction form
    121,899.71/168,186.57 = 70,207.23/x
  3. Step 3: Cross multiply
    121,899.71x = 168,186.57 × 70,207.23
  4. Step 4: Simplify right side
    121,899.71x = 11,807,913,202.90
  5. Step 5: Solve for x
    x = 11,807,913,202.90/121,899.71
  6. Step 6: Final answer
    x = 96,865.81

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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.