Home / 135,642.20-187,188.48-75,215.39

Finding the Fourth Proportional to 135,642.20, 187,188.48 and 75,215.39

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Solution

The fourth proportional to 135,642.20, 187,188.48 and 75,215.39 is: 103,798.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,642.20 : 187,188.48 = 75,215.39 : x
  2. Step 2: Convert to fraction form
    135,642.20/187,188.48 = 75,215.39/x
  3. Step 3: Cross multiply
    135,642.20x = 187,188.48 × 75,215.39
  4. Step 4: Simplify right side
    135,642.20x = 14,079,454,526.71
  5. Step 5: Solve for x
    x = 14,079,454,526.71/135,642.20
  6. Step 6: Final answer
    x = 103,798.48

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1.5x scale

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.