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Finding the Fourth Proportional to 91,242.29, 136,672.59 and 73,376.21

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Solution

The fourth proportional to 91,242.29, 136,672.59 and 73,376.21 is: 109,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,242.29 : 136,672.59 = 73,376.21 : x
  2. Step 2: Convert to fraction form
    91,242.29/136,672.59 = 73,376.21/x
  3. Step 3: Cross multiply
    91,242.29x = 136,672.59 × 73,376.21
  4. Step 4: Simplify right side
    91,242.29x = 10,028,516,731.60
  5. Step 5: Solve for x
    x = 10,028,516,731.60/91,242.29
  6. Step 6: Final answer
    x = 109,910.84

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1.5x scale

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.