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Finding the Fourth Proportional to 114,943, 172,247.58 and 81,729.76

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Solution

The fourth proportional to 114,943, 172,247.58 and 81,729.76 is: 122,475.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,943 : 172,247.58 = 81,729.76 : x
  2. Step 2: Convert to fraction form
    114,943/172,247.58 = 81,729.76/x
  3. Step 3: Cross multiply
    114,943x = 172,247.58 × 81,729.76
  4. Step 4: Simplify right side
    114,943x = 14,077,753,373.98
  5. Step 5: Solve for x
    x = 14,077,753,373.98/114,943
  6. Step 6: Final answer
    x = 122,475.95

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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.