Home / 100,829.92-139,145.20-62,575.20

Finding the Fourth Proportional to 100,829.92, 139,145.20 and 62,575.20

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Solution

The fourth proportional to 100,829.92, 139,145.20 and 62,575.20 is: 86,353.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,829.92 : 139,145.20 = 62,575.20 : x
  2. Step 2: Convert to fraction form
    100,829.92/139,145.20 = 62,575.20/x
  3. Step 3: Cross multiply
    100,829.92x = 139,145.20 × 62,575.20
  4. Step 4: Simplify right side
    100,829.92x = 8,707,038,719.04
  5. Step 5: Solve for x
    x = 8,707,038,719.04/100,829.92
  6. Step 6: Final answer
    x = 86,353.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.