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Finding the Fourth Proportional to 132,561.70, 182,874.70 and 78,816.17

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Solution

The fourth proportional to 132,561.70, 182,874.70 and 78,816.17 is: 108,730.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,561.70 : 182,874.70 = 78,816.17 : x
  2. Step 2: Convert to fraction form
    132,561.70/182,874.70 = 78,816.17/x
  3. Step 3: Cross multiply
    132,561.70x = 182,874.70 × 78,816.17
  4. Step 4: Simplify right side
    132,561.70x = 14,413,483,443.90
  5. Step 5: Solve for x
    x = 14,413,483,443.90/132,561.70
  6. Step 6: Final answer
    x = 108,730.38

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1.5x scale

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.