Home / 140,939.60-194,496.39-77,281.49

Finding the Fourth Proportional to 140,939.60, 194,496.39 and 77,281.49

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Solution

The fourth proportional to 140,939.60, 194,496.39 and 77,281.49 is: 106,648.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,939.60 : 194,496.39 = 77,281.49 : x
  2. Step 2: Convert to fraction form
    140,939.60/194,496.39 = 77,281.49/x
  3. Step 3: Cross multiply
    140,939.60x = 194,496.39 × 77,281.49
  4. Step 4: Simplify right side
    140,939.60x = 15,030,971,305.06
  5. Step 5: Solve for x
    x = 15,030,971,305.06/140,939.60
  6. Step 6: Final answer
    x = 106,648.32

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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.