Home / 112,939.79-169,440.66-91,827.34

Finding the Fourth Proportional to 112,939.79, 169,440.66 and 91,827.34

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Solution

The fourth proportional to 112,939.79, 169,440.66 and 91,827.34 is: 137,766.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,939.79 : 169,440.66 = 91,827.34 : x
  2. Step 2: Convert to fraction form
    112,939.79/169,440.66 = 91,827.34/x
  3. Step 3: Cross multiply
    112,939.79x = 169,440.66 × 91,827.34
  4. Step 4: Simplify right side
    112,939.79x = 15,559,284,672.04
  5. Step 5: Solve for x
    x = 15,559,284,672.04/112,939.79
  6. Step 6: Final answer
    x = 137,766.20

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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.