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Finding the Fourth Proportional to 138,415.70, 207,623.55 and 88,552.10

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Solution

The fourth proportional to 138,415.70, 207,623.55 and 88,552.10 is: 132,828.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,415.70 : 207,623.55 = 88,552.10 : x
  2. Step 2: Convert to fraction form
    138,415.70/207,623.55 = 88,552.10/x
  3. Step 3: Cross multiply
    138,415.70x = 207,623.55 × 88,552.10
  4. Step 4: Simplify right side
    138,415.70x = 18,385,501,361.96
  5. Step 5: Solve for x
    x = 18,385,501,361.96/138,415.70
  6. Step 6: Final answer
    x = 132,828.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.