Home / 135,816.80-187,426.20-75,385.36

Finding the Fourth Proportional to 135,816.80, 187,426.20 and 75,385.36

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Solution

The fourth proportional to 135,816.80, 187,426.20 and 75,385.36 is: 104,031.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,816.80 : 187,426.20 = 75,385.36 : x
  2. Step 2: Convert to fraction form
    135,816.80/187,426.20 = 75,385.36/x
  3. Step 3: Cross multiply
    135,816.80x = 187,426.20 × 75,385.36
  4. Step 4: Simplify right side
    135,816.80x = 14,129,191,560.43
  5. Step 5: Solve for x
    x = 14,129,191,560.43/135,816.80
  6. Step 6: Final answer
    x = 104,031.25

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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.