Home / 129,727,120.92-179,023,444.56-70,989,800.04

Finding the Fourth Proportional to 129,727,120.92, 179,023,444.56 and 70,989,800.04

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Solution

The fourth proportional to 129,727,120.92, 179,023,444.56 and 70,989,800.04 is: 97,965,933.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,727,120.92 : 179,023,444.56 = 70,989,800.04 : x
  2. Step 2: Convert to fraction form
    129,727,120.92/179,023,444.56 = 70,989,800.04/x
  3. Step 3: Cross multiply
    129,727,120.92x = 179,023,444.56 × 70,989,800.04
  4. Step 4: Simplify right side
    129,727,120.92x = 12,708,838,531,786,428
  5. Step 5: Solve for x
    x = 12,708,838,531,786,428/129,727,120.92
  6. Step 6: Final answer
    x = 97,965,933.74

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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.