Home / 105,613.62-158,408.10-42,431.19

Finding the Fourth Proportional to 105,613.62, 158,408.10 and 42,431.19

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Solution

The fourth proportional to 105,613.62, 158,408.10 and 42,431.19 is: 63,641.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,613.62 : 158,408.10 = 42,431.19 : x
  2. Step 2: Convert to fraction form
    105,613.62/158,408.10 = 42,431.19/x
  3. Step 3: Cross multiply
    105,613.62x = 158,408.10 × 42,431.19
  4. Step 4: Simplify right side
    105,613.62x = 6,721,443,184.44
  5. Step 5: Solve for x
    x = 6,721,443,184.44/105,613.62
  6. Step 6: Final answer
    x = 63,641.82

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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.