Home / 121,720,029.60-167,991,669.16-77,070,151.74

Finding the Fourth Proportional to 121,720,029.60, 167,991,669.16 and 77,070,151.74

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Solution

The fourth proportional to 121,720,029.60, 167,991,669.16 and 77,070,151.74 is: 106,368,224.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,720,029.60 : 167,991,669.16 = 77,070,151.74 : x
  2. Step 2: Convert to fraction form
    121,720,029.60/167,991,669.16 = 77,070,151.74/x
  3. Step 3: Cross multiply
    121,720,029.60x = 167,991,669.16 × 77,070,151.74
  4. Step 4: Simplify right side
    121,720,029.60x = 12,947,143,433,217,078
  5. Step 5: Solve for x
    x = 12,947,143,433,217,078/121,720,029.60
  6. Step 6: Final answer
    x = 106,368,224.49

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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.