Home / 99,588.78-137,424.06-57,146.40

Finding the Fourth Proportional to 99,588.78, 137,424.06 and 57,146.40

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Solution

The fourth proportional to 99,588.78, 137,424.06 and 57,146.40 is: 78,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,588.78 : 137,424.06 = 57,146.40 : x
  2. Step 2: Convert to fraction form
    99,588.78/137,424.06 = 57,146.40/x
  3. Step 3: Cross multiply
    99,588.78x = 137,424.06 × 57,146.40
  4. Step 4: Simplify right side
    99,588.78x = 7,853,290,302.38
  5. Step 5: Solve for x
    x = 7,853,290,302.38/99,588.78
  6. Step 6: Final answer
    x = 78,857.18

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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.