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Finding the Fourth Proportional to 99,744,514.80, 149,364,829.80 and 65,480,348.40

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Solution

The fourth proportional to 99,744,514.80, 149,364,829.80 and 65,480,348.40 is: 98,055,127.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,744,514.80 : 149,364,829.80 = 65,480,348.40 : x
  2. Step 2: Convert to fraction form
    99,744,514.80/149,364,829.80 = 65,480,348.40/x
  3. Step 3: Cross multiply
    99,744,514.80x = 149,364,829.80 × 65,480,348.40
  4. Step 4: Simplify right side
    99,744,514.80x = 9,780,461,094,010,702
  5. Step 5: Solve for x
    x = 9,780,461,094,010,702/99,744,514.80
  6. Step 6: Final answer
    x = 98,055,127.28

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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.