Home / 91,239,625.80-136,859,438.70-85,193,008.20

Finding the Fourth Proportional to 91,239,625.80, 136,859,438.70 and 85,193,008.20

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Solution

The fourth proportional to 91,239,625.80, 136,859,438.70 and 85,193,008.20 is: 127,789,512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,239,625.80 : 136,859,438.70 = 85,193,008.20 : x
  2. Step 2: Convert to fraction form
    91,239,625.80/136,859,438.70 = 85,193,008.20/x
  3. Step 3: Cross multiply
    91,239,625.80x = 136,859,438.70 × 85,193,008.20
  4. Step 4: Simplify right side
    91,239,625.80x = 11,659,467,283,416,496
  5. Step 5: Solve for x
    x = 11,659,467,283,416,496/91,239,625.80
  6. Step 6: Final answer
    x = 127,789,512.30

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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.