Home / 387,432.96-581,148.57-103,123.56

Finding the Fourth Proportional to 387,432.96, 581,148.57 and 103,123.56

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Solution

The fourth proportional to 387,432.96, 581,148.57 and 103,123.56 is: 154,685.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,432.96 : 581,148.57 = 103,123.56 : x
  2. Step 2: Convert to fraction form
    387,432.96/581,148.57 = 103,123.56/x
  3. Step 3: Cross multiply
    387,432.96x = 581,148.57 × 103,123.56
  4. Step 4: Simplify right side
    387,432.96x = 59,930,109,427.31
  5. Step 5: Solve for x
    x = 59,930,109,427.31/387,432.96
  6. Step 6: Final answer
    x = 154,685.11

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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.