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Finding the Fourth Proportional to 98,133.60, 147,200.40 and 82,387.20

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Solution

The fourth proportional to 98,133.60, 147,200.40 and 82,387.20 is: 123,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,133.60 : 147,200.40 = 82,387.20 : x
  2. Step 2: Convert to fraction form
    98,133.60/147,200.40 = 82,387.20/x
  3. Step 3: Cross multiply
    98,133.60x = 147,200.40 × 82,387.20
  4. Step 4: Simplify right side
    98,133.60x = 12,127,428,794.88
  5. Step 5: Solve for x
    x = 12,127,428,794.88/98,133.60
  6. Step 6: Final answer
    x = 123,580.80

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1.5x scale

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.