Home / 91,581.64-137,159.21-89,059.16

Finding the Fourth Proportional to 91,581.64, 137,159.21 and 89,059.16

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Solution

The fourth proportional to 91,581.64, 137,159.21 and 89,059.16 is: 133,381.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,581.64 : 137,159.21 = 89,059.16 : x
  2. Step 2: Convert to fraction form
    91,581.64/137,159.21 = 89,059.16/x
  3. Step 3: Cross multiply
    91,581.64x = 137,159.21 × 89,059.16
  4. Step 4: Simplify right side
    91,581.64x = 12,215,284,594.41
  5. Step 5: Solve for x
    x = 12,215,284,594.41/91,581.64
  6. Step 6: Final answer
    x = 133,381.37

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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.