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Finding the Fourth Proportional to 117,242.46, 175,220.01 and 85,718.88

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Solution

The fourth proportional to 117,242.46, 175,220.01 and 85,718.88 is: 128,107.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,242.46 : 175,220.01 = 85,718.88 : x
  2. Step 2: Convert to fraction form
    117,242.46/175,220.01 = 85,718.88/x
  3. Step 3: Cross multiply
    117,242.46x = 175,220.01 × 85,718.88
  4. Step 4: Simplify right side
    117,242.46x = 15,019,663,010.79
  5. Step 5: Solve for x
    x = 15,019,663,010.79/117,242.46
  6. Step 6: Final answer
    x = 128,107.71

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1.5x scale

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.