Home / 140,425.40-193,787.10-76,763.18

Finding the Fourth Proportional to 140,425.40, 193,787.10 and 76,763.18

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Solution

The fourth proportional to 140,425.40, 193,787.10 and 76,763.18 is: 105,933.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,425.40 : 193,787.10 = 76,763.18 : x
  2. Step 2: Convert to fraction form
    140,425.40/193,787.10 = 76,763.18/x
  3. Step 3: Cross multiply
    140,425.40x = 193,787.10 × 76,763.18
  4. Step 4: Simplify right side
    140,425.40x = 14,875,713,070.04
  5. Step 5: Solve for x
    x = 14,875,713,070.04/140,425.40
  6. Step 6: Final answer
    x = 105,933.21

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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.