Home / 125,020.47-172,513.08-99,591.60

Finding the Fourth Proportional to 125,020.47, 172,513.08 and 99,591.60

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Solution

The fourth proportional to 125,020.47, 172,513.08 and 99,591.60 is: 137,424.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,020.47 : 172,513.08 = 99,591.60 : x
  2. Step 2: Convert to fraction form
    125,020.47/172,513.08 = 99,591.60/x
  3. Step 3: Cross multiply
    125,020.47x = 172,513.08 × 99,591.60
  4. Step 4: Simplify right side
    125,020.47x = 17,180,853,658.13
  5. Step 5: Solve for x
    x = 17,180,853,658.13/125,020.47
  6. Step 6: Final answer
    x = 137,424.32

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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.