Home / 102,711.24-141,678.72-64,984.68

Finding the Fourth Proportional to 102,711.24, 141,678.72 and 64,984.68

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Solution

The fourth proportional to 102,711.24, 141,678.72 and 64,984.68 is: 89,639.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,711.24 : 141,678.72 = 64,984.68 : x
  2. Step 2: Convert to fraction form
    102,711.24/141,678.72 = 64,984.68/x
  3. Step 3: Cross multiply
    102,711.24x = 141,678.72 × 64,984.68
  4. Step 4: Simplify right side
    102,711.24x = 9,206,946,282.01
  5. Step 5: Solve for x
    x = 9,206,946,282.01/102,711.24
  6. Step 6: Final answer
    x = 89,639.13

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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.