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Finding the Fourth Proportional to 98,409.40, 148,002.90 and 88,300.60

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Solution

The fourth proportional to 98,409.40, 148,002.90 and 88,300.60 is: 132,799.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,409.40 : 148,002.90 = 88,300.60 : x
  2. Step 2: Convert to fraction form
    98,409.40/148,002.90 = 88,300.60/x
  3. Step 3: Cross multiply
    98,409.40x = 148,002.90 × 88,300.60
  4. Step 4: Simplify right side
    98,409.40x = 13,068,744,871.74
  5. Step 5: Solve for x
    x = 13,068,744,871.74/98,409.40
  6. Step 6: Final answer
    x = 132,799.76

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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.