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Finding the Fourth Proportional to 148,398.56, 204,753.28 and 87,983.36

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Solution

The fourth proportional to 148,398.56, 204,753.28 and 87,983.36 is: 121,395.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,398.56 : 204,753.28 = 87,983.36 : x
  2. Step 2: Convert to fraction form
    148,398.56/204,753.28 = 87,983.36/x
  3. Step 3: Cross multiply
    148,398.56x = 204,753.28 × 87,983.36
  4. Step 4: Simplify right side
    148,398.56x = 18,014,881,545.42
  5. Step 5: Solve for x
    x = 18,014,881,545.42/148,398.56
  6. Step 6: Final answer
    x = 121,395.26

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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.