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Finding the Fourth Proportional to 134,569, 185,705.22 and 74,956.84

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Solution

The fourth proportional to 134,569, 185,705.22 and 74,956.84 is: 103,440.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,569 : 185,705.22 = 74,956.84 : x
  2. Step 2: Convert to fraction form
    134,569/185,705.22 = 74,956.84/x
  3. Step 3: Cross multiply
    134,569x = 185,705.22 × 74,956.84
  4. Step 4: Simplify right side
    134,569x = 13,919,876,462.70
  5. Step 5: Solve for x
    x = 13,919,876,462.70/134,569
  6. Step 6: Final answer
    x = 103,440.44

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1.5x scale

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.