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Finding the Fourth Proportional to 102,374.80, 153,562.20 and 98,438.20

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Solution

The fourth proportional to 102,374.80, 153,562.20 and 98,438.20 is: 147,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,374.80 : 153,562.20 = 98,438.20 : x
  2. Step 2: Convert to fraction form
    102,374.80/153,562.20 = 98,438.20/x
  3. Step 3: Cross multiply
    102,374.80x = 153,562.20 × 98,438.20
  4. Step 4: Simplify right side
    102,374.80x = 15,116,386,556.04
  5. Step 5: Solve for x
    x = 15,116,386,556.04/102,374.80
  6. Step 6: Final answer
    x = 147,657.30

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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.