Home / 138,695.60-207,916.66-49,928.80

Finding the Fourth Proportional to 138,695.60, 207,916.66 and 49,928.80

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Solution

The fourth proportional to 138,695.60, 207,916.66 and 49,928.80 is: 74,847.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,695.60 : 207,916.66 = 49,928.80 : x
  2. Step 2: Convert to fraction form
    138,695.60/207,916.66 = 49,928.80/x
  3. Step 3: Cross multiply
    138,695.60x = 207,916.66 × 49,928.80
  4. Step 4: Simplify right side
    138,695.60x = 10,381,029,333.81
  5. Step 5: Solve for x
    x = 10,381,029,333.81/138,695.60
  6. Step 6: Final answer
    x = 74,847.58

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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.