Home / 136,042.05-187,790.35-90,703.46

Finding the Fourth Proportional to 136,042.05, 187,790.35 and 90,703.46

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Solution

The fourth proportional to 136,042.05, 187,790.35 and 90,703.46 is: 125,205.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,042.05 : 187,790.35 = 90,703.46 : x
  2. Step 2: Convert to fraction form
    136,042.05/187,790.35 = 90,703.46/x
  3. Step 3: Cross multiply
    136,042.05x = 187,790.35 × 90,703.46
  4. Step 4: Simplify right side
    136,042.05x = 17,033,234,912.40
  5. Step 5: Solve for x
    x = 17,033,234,912.40/136,042.05
  6. Step 6: Final answer
    x = 125,205.66

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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.