Home / 91,827.77-137,790.87-85,135.55

Finding the Fourth Proportional to 91,827.77, 137,790.87 and 85,135.55

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Solution

The fourth proportional to 91,827.77, 137,790.87 and 85,135.55 is: 127,748.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,827.77 : 137,790.87 = 85,135.55 : x
  2. Step 2: Convert to fraction form
    91,827.77/137,790.87 = 85,135.55/x
  3. Step 3: Cross multiply
    91,827.77x = 137,790.87 × 85,135.55
  4. Step 4: Simplify right side
    91,827.77x = 11,730,901,076.75
  5. Step 5: Solve for x
    x = 11,730,901,076.75/91,827.77
  6. Step 6: Final answer
    x = 127,748.95

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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.