Home / 91,956.39-137,129.85-91,115.58

Finding the Fourth Proportional to 91,956.39, 137,129.85 and 91,115.58

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Solution

The fourth proportional to 91,956.39, 137,129.85 and 91,115.58 is: 135,875.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,956.39 : 137,129.85 = 91,115.58 : x
  2. Step 2: Convert to fraction form
    91,956.39/137,129.85 = 91,115.58/x
  3. Step 3: Cross multiply
    91,956.39x = 137,129.85 × 91,115.58
  4. Step 4: Simplify right side
    91,956.39x = 12,494,665,818.06
  5. Step 5: Solve for x
    x = 12,494,665,818.06/91,956.39
  6. Step 6: Final answer
    x = 135,875.99

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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.