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Finding the Fourth Proportional to 136,411.20, 204,678.72 and 61,490.88

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Solution

The fourth proportional to 136,411.20, 204,678.72 and 61,490.88 is: 92,264.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,411.20 : 204,678.72 = 61,490.88 : x
  2. Step 2: Convert to fraction form
    136,411.20/204,678.72 = 61,490.88/x
  3. Step 3: Cross multiply
    136,411.20x = 204,678.72 × 61,490.88
  4. Step 4: Simplify right side
    136,411.20x = 12,585,874,610.07
  5. Step 5: Solve for x
    x = 12,585,874,610.07/136,411.20
  6. Step 6: Final answer
    x = 92,264.23

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1.5x scale

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.