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Finding the Fourth Proportional to 98,931,286.80, 148,396,930.20 and 73,103,254.20

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Solution

The fourth proportional to 98,931,286.80, 148,396,930.20 and 73,103,254.20 is: 109,654,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,931,286.80 : 148,396,930.20 = 73,103,254.20 : x
  2. Step 2: Convert to fraction form
    98,931,286.80/148,396,930.20 = 73,103,254.20/x
  3. Step 3: Cross multiply
    98,931,286.80x = 148,396,930.20 × 73,103,254.20
  4. Step 4: Simplify right side
    98,931,286.80x = 10,848,298,510,910,256
  5. Step 5: Solve for x
    x = 10,848,298,510,910,256/98,931,286.80
  6. Step 6: Final answer
    x = 109,654,881.30

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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.