Home / 99,509.38-137,326.34-54,188.14

Finding the Fourth Proportional to 99,509.38, 137,326.34 and 54,188.14

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Solution

The fourth proportional to 99,509.38, 137,326.34 and 54,188.14 is: 74,781.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,509.38 : 137,326.34 = 54,188.14 : x
  2. Step 2: Convert to fraction form
    99,509.38/137,326.34 = 54,188.14/x
  3. Step 3: Cross multiply
    99,509.38x = 137,326.34 × 54,188.14
  4. Step 4: Simplify right side
    99,509.38x = 7,441,458,937.61
  5. Step 5: Solve for x
    x = 7,441,458,937.61/99,509.38
  6. Step 6: Final answer
    x = 74,781.48

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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.