Home / 99,654,420.60-149,481,630.90-81,479,138.40

Finding the Fourth Proportional to 99,654,420.60, 149,481,630.90 and 81,479,138.40

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Solution

The fourth proportional to 99,654,420.60, 149,481,630.90 and 81,479,138.40 is: 122,218,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,654,420.60 : 149,481,630.90 = 81,479,138.40 : x
  2. Step 2: Convert to fraction form
    99,654,420.60/149,481,630.90 = 81,479,138.40/x
  3. Step 3: Cross multiply
    99,654,420.60x = 149,481,630.90 × 81,479,138.40
  4. Step 4: Simplify right side
    99,654,420.60x = 12,179,634,492,358,818
  5. Step 5: Solve for x
    x = 12,179,634,492,358,818/99,654,420.60
  6. Step 6: Final answer
    x = 122,218,707.60

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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.