Home / 140,711.49-194,143.37-90,439.65

Finding the Fourth Proportional to 140,711.49, 194,143.37 and 90,439.65

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Solution

The fourth proportional to 140,711.49, 194,143.37 and 90,439.65 is: 124,781.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,711.49 : 194,143.37 = 90,439.65 : x
  2. Step 2: Convert to fraction form
    140,711.49/194,143.37 = 90,439.65/x
  3. Step 3: Cross multiply
    140,711.49x = 194,143.37 × 90,439.65
  4. Step 4: Simplify right side
    140,711.49x = 17,558,257,980.42
  5. Step 5: Solve for x
    x = 17,558,257,980.42/140,711.49
  6. Step 6: Final answer
    x = 124,781.98

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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.