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Finding the Fourth Proportional to 80,387,712,005.10, 120,581,568,007.65 and 80,387,712,005.10

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Solution

The fourth proportional to 80,387,712,005.10, 120,581,568,007.65 and 80,387,712,005.10 is: 120,581,568,007.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,387,712,005.10 : 120,581,568,007.65 = 80,387,712,005.10 : x
  2. Step 2: Convert to fraction form
    80,387,712,005.10/120,581,568,007.65 = 80,387,712,005.10/x
  3. Step 3: Cross multiply
    80,387,712,005.10x = 120,581,568,007.65 × 80,387,712,005.10
  4. Step 4: Simplify right side
    80,387,712,005.10x = 9,693,276,362,122,347,937,792
  5. Step 5: Solve for x
    x = 9,693,276,362,122,347,937,792/80,387,712,005.10
  6. Step 6: Final answer
    x = 120,581,568,007.65

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1.5x scale

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.