Home / 140,420.40-193,780.10-76,758.44

Finding the Fourth Proportional to 140,420.40, 193,780.10 and 76,758.44

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Solution

The fourth proportional to 140,420.40, 193,780.10 and 76,758.44 is: 105,926.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,420.40 : 193,780.10 = 76,758.44 : x
  2. Step 2: Convert to fraction form
    140,420.40/193,780.10 = 76,758.44/x
  3. Step 3: Cross multiply
    140,420.40x = 193,780.10 × 76,758.44
  4. Step 4: Simplify right side
    140,420.40x = 14,874,258,179.04
  5. Step 5: Solve for x
    x = 14,874,258,179.04/140,420.40
  6. Step 6: Final answer
    x = 105,926.62

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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.