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Finding the Fourth Proportional to 148,520.60, 222,780.90 and 78,536.60

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Solution

The fourth proportional to 148,520.60, 222,780.90 and 78,536.60 is: 117,804.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,520.60 : 222,780.90 = 78,536.60 : x
  2. Step 2: Convert to fraction form
    148,520.60/222,780.90 = 78,536.60/x
  3. Step 3: Cross multiply
    148,520.60x = 222,780.90 × 78,536.60
  4. Step 4: Simplify right side
    148,520.60x = 17,496,454,430.94
  5. Step 5: Solve for x
    x = 17,496,454,430.94/148,520.60
  6. Step 6: Final answer
    x = 117,804.90

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1.5x scale

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.