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Finding the Fourth Proportional to 148,430.40, 222,702 and 89,306.88

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Solution

The fourth proportional to 148,430.40, 222,702 and 89,306.88 is: 133,994.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,430.40 : 222,702 = 89,306.88 : x
  2. Step 2: Convert to fraction form
    148,430.40/222,702 = 89,306.88/x
  3. Step 3: Cross multiply
    148,430.40x = 222,702 × 89,306.88
  4. Step 4: Simplify right side
    148,430.40x = 19,888,820,789.76
  5. Step 5: Solve for x
    x = 19,888,820,789.76/148,430.40
  6. Step 6: Final answer
    x = 133,994.25

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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.