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Finding the Fourth Proportional to 98,139.60, 147,209.40 and 48,227.40

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Solution

The fourth proportional to 98,139.60, 147,209.40 and 48,227.40 is: 72,341.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,139.60 : 147,209.40 = 48,227.40 : x
  2. Step 2: Convert to fraction form
    98,139.60/147,209.40 = 48,227.40/x
  3. Step 3: Cross multiply
    98,139.60x = 147,209.40 × 48,227.40
  4. Step 4: Simplify right side
    98,139.60x = 7,099,526,617.56
  5. Step 5: Solve for x
    x = 7,099,526,617.56/98,139.60
  6. Step 6: Final answer
    x = 72,341.10

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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.