Home / 148,402.56-204,758.80-87,987.36

Finding the Fourth Proportional to 148,402.56, 204,758.80 and 87,987.36

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Solution

The fourth proportional to 148,402.56, 204,758.80 and 87,987.36 is: 121,400.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,402.56 : 204,758.80 = 87,987.36 : x
  2. Step 2: Convert to fraction form
    148,402.56/204,758.80 = 87,987.36/x
  3. Step 3: Cross multiply
    148,402.56x = 204,758.80 × 87,987.36
  4. Step 4: Simplify right side
    148,402.56x = 18,016,186,248.77
  5. Step 5: Solve for x
    x = 18,016,186,248.77/148,402.56
  6. Step 6: Final answer
    x = 121,400.78

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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.