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Finding the Fourth Proportional to 117,392.68, 176,082.54 and 85,835.08

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Solution

The fourth proportional to 117,392.68, 176,082.54 and 85,835.08 is: 128,747.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,392.68 : 176,082.54 = 85,835.08 : x
  2. Step 2: Convert to fraction form
    117,392.68/176,082.54 = 85,835.08/x
  3. Step 3: Cross multiply
    117,392.68x = 176,082.54 × 85,835.08
  4. Step 4: Simplify right side
    117,392.68x = 15,114,058,907.50
  5. Step 5: Solve for x
    x = 15,114,058,907.50/117,392.68
  6. Step 6: Final answer
    x = 128,747.88

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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.