Home / 91,711.32-137,389.86-67,653.24

Finding the Fourth Proportional to 91,711.32, 137,389.86 and 67,653.24

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Solution

The fourth proportional to 91,711.32, 137,389.86 and 67,653.24 is: 101,349.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,711.32 : 137,389.86 = 67,653.24 : x
  2. Step 2: Convert to fraction form
    91,711.32/137,389.86 = 67,653.24/x
  3. Step 3: Cross multiply
    91,711.32x = 137,389.86 × 67,653.24
  4. Step 4: Simplify right side
    91,711.32x = 9,294,869,172.15
  5. Step 5: Solve for x
    x = 9,294,869,172.15/91,711.32
  6. Step 6: Final answer
    x = 101,349.20

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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.