Home / 135,515.76-187,012.10-75,085.92

Finding the Fourth Proportional to 135,515.76, 187,012.10 and 75,085.92

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Solution

The fourth proportional to 135,515.76, 187,012.10 and 75,085.92 is: 103,618.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,515.76 : 187,012.10 = 75,085.92 : x
  2. Step 2: Convert to fraction form
    135,515.76/187,012.10 = 75,085.92/x
  3. Step 3: Cross multiply
    135,515.76x = 187,012.10 × 75,085.92
  4. Step 4: Simplify right side
    135,515.76x = 14,041,975,579.63
  5. Step 5: Solve for x
    x = 14,041,975,579.63/135,515.76
  6. Step 6: Final answer
    x = 103,618.76

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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.