Home / 91,956.75-137,130.41-91,115.95

Finding the Fourth Proportional to 91,956.75, 137,130.41 and 91,115.95

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Solution

The fourth proportional to 91,956.75, 137,130.41 and 91,115.95 is: 135,876.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,956.75 : 137,130.41 = 91,115.95 : x
  2. Step 2: Convert to fraction form
    91,956.75/137,130.41 = 91,115.95/x
  3. Step 3: Cross multiply
    91,956.75x = 137,130.41 × 91,115.95
  4. Step 4: Simplify right side
    91,956.75x = 12,494,767,581.04
  5. Step 5: Solve for x
    x = 12,494,767,581.04/91,956.75
  6. Step 6: Final answer
    x = 135,876.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.