Home / 135,663.39-187,227.32-79,073.55

Finding the Fourth Proportional to 135,663.39, 187,227.32 and 79,073.55

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Solution

The fourth proportional to 135,663.39, 187,227.32 and 79,073.55 is: 109,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,663.39 : 187,227.32 = 79,073.55 : x
  2. Step 2: Convert to fraction form
    135,663.39/187,227.32 = 79,073.55/x
  3. Step 3: Cross multiply
    135,663.39x = 187,227.32 × 79,073.55
  4. Step 4: Simplify right side
    135,663.39x = 14,804,728,454.02
  5. Step 5: Solve for x
    x = 14,804,728,454.02/135,663.39
  6. Step 6: Final answer
    x = 109,128.40

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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.