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Finding the Fourth Proportional to 147,555.80, 221,333.70 and 118,031.30

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Solution

The fourth proportional to 147,555.80, 221,333.70 and 118,031.30 is: 177,046.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,555.80 : 221,333.70 = 118,031.30 : x
  2. Step 2: Convert to fraction form
    147,555.80/221,333.70 = 118,031.30/x
  3. Step 3: Cross multiply
    147,555.80x = 221,333.70 × 118,031.30
  4. Step 4: Simplify right side
    147,555.80x = 26,124,304,344.81
  5. Step 5: Solve for x
    x = 26,124,304,344.81/147,555.80
  6. Step 6: Final answer
    x = 177,046.95

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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.