Home / 135,502.50-187,081.21-87,126.17

Finding the Fourth Proportional to 135,502.50, 187,081.21 and 87,126.17

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Solution

The fourth proportional to 135,502.50, 187,081.21 and 87,126.17 is: 120,290.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,502.50 : 187,081.21 = 87,126.17 : x
  2. Step 2: Convert to fraction form
    135,502.50/187,081.21 = 87,126.17/x
  3. Step 3: Cross multiply
    135,502.50x = 187,081.21 × 87,126.17
  4. Step 4: Simplify right side
    135,502.50x = 16,299,668,479.77
  5. Step 5: Solve for x
    x = 16,299,668,479.77/135,502.50
  6. Step 6: Final answer
    x = 120,290.53

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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.