Home / 129,668,359.68-194,516,161.38-42,236,690.12

Finding the Fourth Proportional to 129,668,359.68, 194,516,161.38 and 42,236,690.12

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Solution

The fourth proportional to 129,668,359.68, 194,516,161.38 and 42,236,690.12 is: 63,359,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,668,359.68 : 194,516,161.38 = 42,236,690.12 : x
  2. Step 2: Convert to fraction form
    129,668,359.68/194,516,161.38 = 42,236,690.12/x
  3. Step 3: Cross multiply
    129,668,359.68x = 194,516,161.38 × 42,236,690.12
  4. Step 4: Simplify right side
    129,668,359.68x = 8,215,718,831,538,971
  5. Step 5: Solve for x
    x = 8,215,718,831,538,971/129,668,359.68
  6. Step 6: Final answer
    x = 63,359,472.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.