Home / 99,511.38-137,329.10-54,190.14

Finding the Fourth Proportional to 99,511.38, 137,329.10 and 54,190.14

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Solution

The fourth proportional to 99,511.38, 137,329.10 and 54,190.14 is: 74,784.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,511.38 : 137,329.10 = 54,190.14 : x
  2. Step 2: Convert to fraction form
    99,511.38/137,329.10 = 54,190.14/x
  3. Step 3: Cross multiply
    99,511.38x = 137,329.10 × 54,190.14
  4. Step 4: Simplify right side
    99,511.38x = 7,441,883,155.07
  5. Step 5: Solve for x
    x = 7,441,883,155.07/99,511.38
  6. Step 6: Final answer
    x = 74,784.24

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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.