Home / 109,531.59-151,158.18-61,784.92

Finding the Fourth Proportional to 109,531.59, 151,158.18 and 61,784.92

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Solution

The fourth proportional to 109,531.59, 151,158.18 and 61,784.92 is: 85,265.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,531.59 : 151,158.18 = 61,784.92 : x
  2. Step 2: Convert to fraction form
    109,531.59/151,158.18 = 61,784.92/x
  3. Step 3: Cross multiply
    109,531.59x = 151,158.18 × 61,784.92
  4. Step 4: Simplify right side
    109,531.59x = 9,339,296,479.29
  5. Step 5: Solve for x
    x = 9,339,296,479.29/109,531.59
  6. Step 6: Final answer
    x = 85,265.78

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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.