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Finding the Fourth Proportional to 99,745,768.80, 149,366,710.80 and 65,481,602.40

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Solution

The fourth proportional to 99,745,768.80, 149,366,710.80 and 65,481,602.40 is: 98,057,007.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,745,768.80 : 149,366,710.80 = 65,481,602.40 : x
  2. Step 2: Convert to fraction form
    99,745,768.80/149,366,710.80 = 65,481,602.40/x
  3. Step 3: Cross multiply
    99,745,768.80x = 149,366,710.80 × 65,481,602.40
  4. Step 4: Simplify right side
    99,745,768.80x = 9,780,771,568,401,386
  5. Step 5: Solve for x
    x = 9,780,771,568,401,386/99,745,768.80
  6. Step 6: Final answer
    x = 98,057,007.19

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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.