Home / 91,240.12-136,860.11-66,437.95

Finding the Fourth Proportional to 91,240.12, 136,860.11 and 66,437.95

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Solution

The fourth proportional to 91,240.12, 136,860.11 and 66,437.95 is: 99,656.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,240.12 : 136,860.11 = 66,437.95 : x
  2. Step 2: Convert to fraction form
    91,240.12/136,860.11 = 66,437.95/x
  3. Step 3: Cross multiply
    91,240.12x = 136,860.11 × 66,437.95
  4. Step 4: Simplify right side
    91,240.12x = 9,092,704,404.81
  5. Step 5: Solve for x
    x = 9,092,704,404.81/91,240.12
  6. Step 6: Final answer
    x = 99,656.86

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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.