Home / 135,343.50-186,769.35-74,916.78

Finding the Fourth Proportional to 135,343.50, 186,769.35 and 74,916.78

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Solution

The fourth proportional to 135,343.50, 186,769.35 and 74,916.78 is: 103,382.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,343.50 : 186,769.35 = 74,916.78 : x
  2. Step 2: Convert to fraction form
    135,343.50/186,769.35 = 74,916.78/x
  3. Step 3: Cross multiply
    135,343.50x = 186,769.35 × 74,916.78
  4. Step 4: Simplify right side
    135,343.50x = 13,992,158,304.69
  5. Step 5: Solve for x
    x = 13,992,158,304.69/135,343.50
  6. Step 6: Final answer
    x = 103,382.57

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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.