Home / 135,581.52-187,113.72-75,171.12

Finding the Fourth Proportional to 135,581.52, 187,113.72 and 75,171.12

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Solution

The fourth proportional to 135,581.52, 187,113.72 and 75,171.12 is: 103,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,581.52 : 187,113.72 = 75,171.12 : x
  2. Step 2: Convert to fraction form
    135,581.52/187,113.72 = 75,171.12/x
  3. Step 3: Cross multiply
    135,581.52x = 187,113.72 × 75,171.12
  4. Step 4: Simplify right side
    135,581.52x = 14,065,547,899.77
  5. Step 5: Solve for x
    x = 14,065,547,899.77/135,581.52
  6. Step 6: Final answer
    x = 103,742.37

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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.