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Finding the Fourth Proportional to 147,140.20, 220,127.10 and 127,635.40

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Solution

The fourth proportional to 147,140.20, 220,127.10 and 127,635.40 is: 190,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,140.20 : 220,127.10 = 127,635.40 : x
  2. Step 2: Convert to fraction form
    147,140.20/220,127.10 = 127,635.40/x
  3. Step 3: Cross multiply
    147,140.20x = 220,127.10 × 127,635.40
  4. Step 4: Simplify right side
    147,140.20x = 28,096,010,459.34
  5. Step 5: Solve for x
    x = 28,096,010,459.34/147,140.20
  6. Step 6: Final answer
    x = 190,947.21

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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.