Home / 136,909.85-205,384.21-42,147.90

Finding the Fourth Proportional to 136,909.85, 205,384.21 and 42,147.90

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Solution

The fourth proportional to 136,909.85, 205,384.21 and 42,147.90 is: 63,227.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,909.85 : 205,384.21 = 42,147.90 : x
  2. Step 2: Convert to fraction form
    136,909.85/205,384.21 = 42,147.90/x
  3. Step 3: Cross multiply
    136,909.85x = 205,384.21 × 42,147.90
  4. Step 4: Simplify right side
    136,909.85x = 8,656,513,039.29
  5. Step 5: Solve for x
    x = 8,656,513,039.29/136,909.85
  6. Step 6: Final answer
    x = 63,227.83

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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.