Home / 140,782.56-194,280-77,120.48

Finding the Fourth Proportional to 140,782.56, 194,280 and 77,120.48

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Solution

The fourth proportional to 140,782.56, 194,280 and 77,120.48 is: 106,426.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,782.56 : 194,280 = 77,120.48 : x
  2. Step 2: Convert to fraction form
    140,782.56/194,280 = 77,120.48/x
  3. Step 3: Cross multiply
    140,782.56x = 194,280 × 77,120.48
  4. Step 4: Simplify right side
    140,782.56x = 14,982,966,854.40
  5. Step 5: Solve for x
    x = 14,982,966,854.40/140,782.56
  6. Step 6: Final answer
    x = 106,426.30

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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.