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Finding the Fourth Proportional to 148,854.60, 223,281.90 and 78,870.60

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Solution

The fourth proportional to 148,854.60, 223,281.90 and 78,870.60 is: 118,305.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,854.60 : 223,281.90 = 78,870.60 : x
  2. Step 2: Convert to fraction form
    148,854.60/223,281.90 = 78,870.60/x
  3. Step 3: Cross multiply
    148,854.60x = 223,281.90 × 78,870.60
  4. Step 4: Simplify right side
    148,854.60x = 17,610,377,422.14
  5. Step 5: Solve for x
    x = 17,610,377,422.14/148,854.60
  6. Step 6: Final answer
    x = 118,305.90

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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.