Home / 135,690.41-187,275.19-75,280.52

Finding the Fourth Proportional to 135,690.41, 187,275.19 and 75,280.52

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Solution

The fourth proportional to 135,690.41, 187,275.19 and 75,280.52 is: 103,899.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,690.41 : 187,275.19 = 75,280.52 : x
  2. Step 2: Convert to fraction form
    135,690.41/187,275.19 = 75,280.52/x
  3. Step 3: Cross multiply
    135,690.41x = 187,275.19 × 75,280.52
  4. Step 4: Simplify right side
    135,690.41x = 14,098,173,317.37
  5. Step 5: Solve for x
    x = 14,098,173,317.37/135,690.41
  6. Step 6: Final answer
    x = 103,899.55

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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.