Home / 102,719.47-141,843.04-64,545.16

Finding the Fourth Proportional to 102,719.47, 141,843.04 and 64,545.16

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Solution

The fourth proportional to 102,719.47, 141,843.04 and 64,545.16 is: 89,128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,719.47 : 141,843.04 = 64,545.16 : x
  2. Step 2: Convert to fraction form
    102,719.47/141,843.04 = 64,545.16/x
  3. Step 3: Cross multiply
    102,719.47x = 141,843.04 × 64,545.16
  4. Step 4: Simplify right side
    102,719.47x = 9,155,281,711.69
  5. Step 5: Solve for x
    x = 9,155,281,711.69/102,719.47
  6. Step 6: Final answer
    x = 89,128.98

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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.