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Finding the Fourth Proportional to 134,591.36, 185,736.08 and 78,035.52

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Solution

The fourth proportional to 134,591.36, 185,736.08 and 78,035.52 is: 107,689.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,591.36 : 185,736.08 = 78,035.52 : x
  2. Step 2: Convert to fraction form
    134,591.36/185,736.08 = 78,035.52/x
  3. Step 3: Cross multiply
    134,591.36x = 185,736.08 × 78,035.52
  4. Step 4: Simplify right side
    134,591.36x = 14,494,011,585.56
  5. Step 5: Solve for x
    x = 14,494,011,585.56/134,591.36
  6. Step 6: Final answer
    x = 107,689.02

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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.