Home / 137,712,643.20-206,568,964.80-129,820,744.35

Finding the Fourth Proportional to 137,712,643.20, 206,568,964.80 and 129,820,744.35

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Solution

The fourth proportional to 137,712,643.20, 206,568,964.80 and 129,820,744.35 is: 194,731,116.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,712,643.20 : 206,568,964.80 = 129,820,744.35 : x
  2. Step 2: Convert to fraction form
    137,712,643.20/206,568,964.80 = 129,820,744.35/x
  3. Step 3: Cross multiply
    137,712,643.20x = 206,568,964.80 × 129,820,744.35
  4. Step 4: Simplify right side
    137,712,643.20x = 26,816,936,769,944,948
  5. Step 5: Solve for x
    x = 26,816,936,769,944,948/137,712,643.20
  6. Step 6: Final answer
    x = 194,731,116.53

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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.