Home / 128,505.18-192,646.88-61,853.52

Finding the Fourth Proportional to 128,505.18, 192,646.88 and 61,853.52

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Solution

The fourth proportional to 128,505.18, 192,646.88 and 61,853.52 is: 92,726.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,505.18 : 192,646.88 = 61,853.52 : x
  2. Step 2: Convert to fraction form
    128,505.18/192,646.88 = 61,853.52/x
  3. Step 3: Cross multiply
    128,505.18x = 192,646.88 × 61,853.52
  4. Step 4: Simplify right side
    128,505.18x = 11,915,887,645.02
  5. Step 5: Solve for x
    x = 11,915,887,645.02/128,505.18
  6. Step 6: Final answer
    x = 92,726.91

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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.