Home / 99,685.60-137,569.20-57,252.64

Finding the Fourth Proportional to 99,685.60, 137,569.20 and 57,252.64

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Solution

The fourth proportional to 99,685.60, 137,569.20 and 57,252.64 is: 79,010.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,685.60 : 137,569.20 = 57,252.64 : x
  2. Step 2: Convert to fraction form
    99,685.60/137,569.20 = 57,252.64/x
  3. Step 3: Cross multiply
    99,685.60x = 137,569.20 × 57,252.64
  4. Step 4: Simplify right side
    99,685.60x = 7,876,199,882.69
  5. Step 5: Solve for x
    x = 7,876,199,882.69/99,685.60
  6. Step 6: Final answer
    x = 79,010.41

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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.