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Finding the Fourth Proportional to 147,061.40, 220,154.70 and 87,866.60

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Solution

The fourth proportional to 147,061.40, 220,154.70 and 87,866.60 is: 131,538.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,061.40 : 220,154.70 = 87,866.60 : x
  2. Step 2: Convert to fraction form
    147,061.40/220,154.70 = 87,866.60/x
  3. Step 3: Cross multiply
    147,061.40x = 220,154.70 × 87,866.60
  4. Step 4: Simplify right side
    147,061.40x = 19,344,244,963.02
  5. Step 5: Solve for x
    x = 19,344,244,963.02/147,061.40
  6. Step 6: Final answer
    x = 131,538.56

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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.