Home / 99,387.39-137,155.68-54,065.49

Finding the Fourth Proportional to 99,387.39, 137,155.68 and 54,065.49

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Solution

The fourth proportional to 99,387.39, 137,155.68 and 54,065.49 is: 74,610.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,387.39 : 137,155.68 = 54,065.49 : x
  2. Step 2: Convert to fraction form
    99,387.39/137,155.68 = 54,065.49/x
  3. Step 3: Cross multiply
    99,387.39x = 137,155.68 × 54,065.49
  4. Step 4: Simplify right side
    99,387.39x = 7,415,389,045.48
  5. Step 5: Solve for x
    x = 7,415,389,045.48/99,387.39
  6. Step 6: Final answer
    x = 74,610.96

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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.