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Finding the Fourth Proportional to 148,886.70, 223,330.05 and 138,972.30

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Solution

The fourth proportional to 148,886.70, 223,330.05 and 138,972.30 is: 208,458.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,886.70 : 223,330.05 = 138,972.30 : x
  2. Step 2: Convert to fraction form
    148,886.70/223,330.05 = 138,972.30/x
  3. Step 3: Cross multiply
    148,886.70x = 223,330.05 × 138,972.30
  4. Step 4: Simplify right side
    148,886.70x = 31,036,690,707.62
  5. Step 5: Solve for x
    x = 31,036,690,707.62/148,886.70
  6. Step 6: Final answer
    x = 208,458.45

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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.