Home / 121,513,015.98-167,688,472.77-65,758,438.71

Finding the Fourth Proportional to 121,513,015.98, 167,688,472.77 and 65,758,438.71

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Solution

The fourth proportional to 121,513,015.98, 167,688,472.77 and 65,758,438.71 is: 90,746,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,513,015.98 : 167,688,472.77 = 65,758,438.71 : x
  2. Step 2: Convert to fraction form
    121,513,015.98/167,688,472.77 = 65,758,438.71/x
  3. Step 3: Cross multiply
    121,513,015.98x = 167,688,472.77 × 65,758,438.71
  4. Step 4: Simplify right side
    121,513,015.98x = 11,026,932,159,019,550
  5. Step 5: Solve for x
    x = 11,026,932,159,019,550/121,513,015.98
  6. Step 6: Final answer
    x = 90,746,921.80

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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.