Home / 126,123.70-173,869.80-99,219.45

Finding the Fourth Proportional to 126,123.70, 173,869.80 and 99,219.45

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Solution

The fourth proportional to 126,123.70, 173,869.80 and 99,219.45 is: 136,780.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,123.70 : 173,869.80 = 99,219.45 : x
  2. Step 2: Convert to fraction form
    126,123.70/173,869.80 = 99,219.45/x
  3. Step 3: Cross multiply
    126,123.70x = 173,869.80 × 99,219.45
  4. Step 4: Simplify right side
    126,123.70x = 17,251,265,927.61
  5. Step 5: Solve for x
    x = 17,251,265,927.61/126,123.70
  6. Step 6: Final answer
    x = 136,780.53

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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.