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Finding the Fourth Proportional to 147,510.60, 203,403.60 and 99,681

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Solution

The fourth proportional to 147,510.60, 203,403.60 and 99,681 is: 137,450.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,510.60 : 203,403.60 = 99,681 : x
  2. Step 2: Convert to fraction form
    147,510.60/203,403.60 = 99,681/x
  3. Step 3: Cross multiply
    147,510.60x = 203,403.60 × 99,681
  4. Step 4: Simplify right side
    147,510.60x = 20,275,474,251.60
  5. Step 5: Solve for x
    x = 20,275,474,251.60/147,510.60
  6. Step 6: Final answer
    x = 137,450.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.