Home / 135,158.57-186,511.30-74,725.69

Finding the Fourth Proportional to 135,158.57, 186,511.30 and 74,725.69

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Solution

The fourth proportional to 135,158.57, 186,511.30 and 74,725.69 is: 103,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,158.57 : 186,511.30 = 74,725.69 : x
  2. Step 2: Convert to fraction form
    135,158.57/186,511.30 = 74,725.69/x
  3. Step 3: Cross multiply
    135,158.57x = 186,511.30 × 74,725.69
  4. Step 4: Simplify right side
    135,158.57x = 13,937,184,932.20
  5. Step 5: Solve for x
    x = 13,937,184,932.20/135,158.57
  6. Step 6: Final answer
    x = 103,117.28

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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.