Home / 135,534.80-187,104.12-90,239.60

Finding the Fourth Proportional to 135,534.80, 187,104.12 and 90,239.60

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Solution

The fourth proportional to 135,534.80, 187,104.12 and 90,239.60 is: 124,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,534.80 : 187,104.12 = 90,239.60 : x
  2. Step 2: Convert to fraction form
    135,534.80/187,104.12 = 90,239.60/x
  3. Step 3: Cross multiply
    135,534.80x = 187,104.12 × 90,239.60
  4. Step 4: Simplify right side
    135,534.80x = 16,884,200,947.15
  5. Step 5: Solve for x
    x = 16,884,200,947.15/135,534.80
  6. Step 6: Final answer
    x = 124,574.65

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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.