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Finding the Fourth Proportional to 99,654,445.80, 149,481,668.70 and 55,890,279.45

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Solution

The fourth proportional to 99,654,445.80, 149,481,668.70 and 55,890,279.45 is: 83,835,419.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,654,445.80 : 149,481,668.70 = 55,890,279.45 : x
  2. Step 2: Convert to fraction form
    99,654,445.80/149,481,668.70 = 55,890,279.45/x
  3. Step 3: Cross multiply
    99,654,445.80x = 149,481,668.70 × 55,890,279.45
  4. Step 4: Simplify right side
    99,654,445.80x = 8,354,572,236,295,318
  5. Step 5: Solve for x
    x = 8,354,572,236,295,318/99,654,445.80
  6. Step 6: Final answer
    x = 83,835,419.18

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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.