Home / 91,136.10-135,859.26-89,696.76

Finding the Fourth Proportional to 91,136.10, 135,859.26 and 89,696.76

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Solution

The fourth proportional to 91,136.10, 135,859.26 and 89,696.76 is: 133,713.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,136.10 : 135,859.26 = 89,696.76 : x
  2. Step 2: Convert to fraction form
    91,136.10/135,859.26 = 89,696.76/x
  3. Step 3: Cross multiply
    91,136.10x = 135,859.26 × 89,696.76
  4. Step 4: Simplify right side
    91,136.10x = 12,186,135,438.00
  5. Step 5: Solve for x
    x = 12,186,135,438.00/91,136.10
  6. Step 6: Final answer
    x = 133,713.59

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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.