Home / 425,585.10-638,471.07-126,089.13

Finding the Fourth Proportional to 425,585.10, 638,471.07 and 126,089.13

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Solution

The fourth proportional to 425,585.10, 638,471.07 and 126,089.13 is: 189,161.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,585.10 : 638,471.07 = 126,089.13 : x
  2. Step 2: Convert to fraction form
    425,585.10/638,471.07 = 126,089.13/x
  3. Step 3: Cross multiply
    425,585.10x = 638,471.07 × 126,089.13
  4. Step 4: Simplify right side
    425,585.10x = 80,504,261,746.47
  5. Step 5: Solve for x
    x = 80,504,261,746.47/425,585.10
  6. Step 6: Final answer
    x = 189,161.37

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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.