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Finding the Fourth Proportional to 135,445.89, 186,916.92 and 75,017.71

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Solution

The fourth proportional to 135,445.89, 186,916.92 and 75,017.71 is: 103,525.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,445.89 : 186,916.92 = 75,017.71 : x
  2. Step 2: Convert to fraction form
    135,445.89/186,916.92 = 75,017.71/x
  3. Step 3: Cross multiply
    135,445.89x = 186,916.92 × 75,017.71
  4. Step 4: Simplify right side
    135,445.89x = 14,022,079,298.65
  5. Step 5: Solve for x
    x = 14,022,079,298.65/135,445.89
  6. Step 6: Final answer
    x = 103,525.32

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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.