Home / 99,428.08-137,213.28-54,108.52

Finding the Fourth Proportional to 99,428.08, 137,213.28 and 54,108.52

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Solution

The fourth proportional to 99,428.08, 137,213.28 and 54,108.52 is: 74,671.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,428.08 : 137,213.28 = 54,108.52 : x
  2. Step 2: Convert to fraction form
    99,428.08/137,213.28 = 54,108.52/x
  3. Step 3: Cross multiply
    99,428.08x = 137,213.28 × 54,108.52
  4. Step 4: Simplify right side
    99,428.08x = 7,424,407,505.15
  5. Step 5: Solve for x
    x = 7,424,407,505.15/99,428.08
  6. Step 6: Final answer
    x = 74,671.13

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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.