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Finding the Fourth Proportional to 134,184, 185,126.72 and 80,486.40

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Solution

The fourth proportional to 134,184, 185,126.72 and 80,486.40 is: 111,042.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,184 : 185,126.72 = 80,486.40 : x
  2. Step 2: Convert to fraction form
    134,184/185,126.72 = 80,486.40/x
  3. Step 3: Cross multiply
    134,184x = 185,126.72 × 80,486.40
  4. Step 4: Simplify right side
    134,184x = 14,900,183,236.61
  5. Step 5: Solve for x
    x = 14,900,183,236.61/134,184
  6. Step 6: Final answer
    x = 111,042.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.