Home / 135,158.20-186,510.78-74,725.32

Finding the Fourth Proportional to 135,158.20, 186,510.78 and 74,725.32

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Solution

The fourth proportional to 135,158.20, 186,510.78 and 74,725.32 is: 103,116.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,158.20 : 186,510.78 = 74,725.32 : x
  2. Step 2: Convert to fraction form
    135,158.20/186,510.78 = 74,725.32/x
  3. Step 3: Cross multiply
    135,158.20x = 186,510.78 × 74,725.32
  4. Step 4: Simplify right side
    135,158.20x = 13,937,077,718.95
  5. Step 5: Solve for x
    x = 13,937,077,718.95/135,158.20
  6. Step 6: Final answer
    x = 103,116.78

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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.