Home / 268,123.74-402,186.83-90,631.70

Finding the Fourth Proportional to 268,123.74, 402,186.83 and 90,631.70

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Solution

The fourth proportional to 268,123.74, 402,186.83 and 90,631.70 is: 135,947.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,123.74 : 402,186.83 = 90,631.70 : x
  2. Step 2: Convert to fraction form
    268,123.74/402,186.83 = 90,631.70/x
  3. Step 3: Cross multiply
    268,123.74x = 402,186.83 × 90,631.70
  4. Step 4: Simplify right side
    268,123.74x = 36,450,876,120.51
  5. Step 5: Solve for x
    x = 36,450,876,120.51/268,123.74
  6. Step 6: Final answer
    x = 135,947.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.