Home / 99,316.53-137,078.19-61,108.56

Finding the Fourth Proportional to 99,316.53, 137,078.19 and 61,108.56

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Solution

The fourth proportional to 99,316.53, 137,078.19 and 61,108.56 is: 84,342.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,316.53 : 137,078.19 = 61,108.56 : x
  2. Step 2: Convert to fraction form
    99,316.53/137,078.19 = 61,108.56/x
  3. Step 3: Cross multiply
    99,316.53x = 137,078.19 × 61,108.56
  4. Step 4: Simplify right side
    99,316.53x = 8,376,650,798.31
  5. Step 5: Solve for x
    x = 8,376,650,798.31/99,316.53
  6. Step 6: Final answer
    x = 84,342.97

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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.