Home / 87,547,430.80-131,321,146.20-80,493,043.60

Finding the Fourth Proportional to 87,547,430.80, 131,321,146.20 and 80,493,043.60

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Solution

The fourth proportional to 87,547,430.80, 131,321,146.20 and 80,493,043.60 is: 120,739,565.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,547,430.80 : 131,321,146.20 = 80,493,043.60 : x
  2. Step 2: Convert to fraction form
    87,547,430.80/131,321,146.20 = 80,493,043.60/x
  3. Step 3: Cross multiply
    87,547,430.80x = 131,321,146.20 × 80,493,043.60
  4. Step 4: Simplify right side
    87,547,430.80x = 10,570,438,746,678,574
  5. Step 5: Solve for x
    x = 10,570,438,746,678,574/87,547,430.80
  6. Step 6: Final answer
    x = 120,739,565.40

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Similar ratio
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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.