Home / 140,807.40-194,309.28-77,144.64

Finding the Fourth Proportional to 140,807.40, 194,309.28 and 77,144.64

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Solution

The fourth proportional to 140,807.40, 194,309.28 and 77,144.64 is: 106,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,807.40 : 194,309.28 = 77,144.64 : x
  2. Step 2: Convert to fraction form
    140,807.40/194,309.28 = 77,144.64/x
  3. Step 3: Cross multiply
    140,807.40x = 194,309.28 × 77,144.64
  4. Step 4: Simplify right side
    140,807.40x = 14,989,919,454.26
  5. Step 5: Solve for x
    x = 14,989,919,454.26/140,807.40
  6. Step 6: Final answer
    x = 106,456.90

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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.