Home / 90,971,250.30-136,456,875.45-81,145,496.70

Finding the Fourth Proportional to 90,971,250.30, 136,456,875.45 and 81,145,496.70

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Solution

The fourth proportional to 90,971,250.30, 136,456,875.45 and 81,145,496.70 is: 121,718,245.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,971,250.30 : 136,456,875.45 = 81,145,496.70 : x
  2. Step 2: Convert to fraction form
    90,971,250.30/136,456,875.45 = 81,145,496.70/x
  3. Step 3: Cross multiply
    90,971,250.30x = 136,456,875.45 × 81,145,496.70
  4. Step 4: Simplify right side
    90,971,250.30x = 11,072,860,936,520,286
  5. Step 5: Solve for x
    x = 11,072,860,936,520,286/90,971,250.30
  6. Step 6: Final answer
    x = 121,718,245.05

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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.