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Finding the Fourth Proportional to 147,373.60, 221,290.80 and 85,165.60

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Solution

The fourth proportional to 147,373.60, 221,290.80 and 85,165.60 is: 127,881.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,373.60 : 221,290.80 = 85,165.60 : x
  2. Step 2: Convert to fraction form
    147,373.60/221,290.80 = 85,165.60/x
  3. Step 3: Cross multiply
    147,373.60x = 221,290.80 × 85,165.60
  4. Step 4: Simplify right side
    147,373.60x = 18,846,363,756.48
  5. Step 5: Solve for x
    x = 18,846,363,756.48/147,373.60
  6. Step 6: Final answer
    x = 127,881.55

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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.