Home / 86,930,891.70-130,396,337.55-77,860,965.30

Finding the Fourth Proportional to 86,930,891.70, 130,396,337.55 and 77,860,965.30

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Solution

The fourth proportional to 86,930,891.70, 130,396,337.55 and 77,860,965.30 is: 116,791,447.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,930,891.70 : 130,396,337.55 = 77,860,965.30 : x
  2. Step 2: Convert to fraction form
    86,930,891.70/130,396,337.55 = 77,860,965.30/x
  3. Step 3: Cross multiply
    86,930,891.70x = 130,396,337.55 × 77,860,965.30
  4. Step 4: Simplify right side
    86,930,891.70x = 10,152,784,713,227,636
  5. Step 5: Solve for x
    x = 10,152,784,713,227,636/86,930,891.70
  6. Step 6: Final answer
    x = 116,791,447.95

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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.