Home / 140,442.46-193,811.28-76,780.26

Finding the Fourth Proportional to 140,442.46, 193,811.28 and 76,780.26

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Solution

The fourth proportional to 140,442.46, 193,811.28 and 76,780.26 is: 105,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,442.46 : 193,811.28 = 76,780.26 : x
  2. Step 2: Convert to fraction form
    140,442.46/193,811.28 = 76,780.26/x
  3. Step 3: Cross multiply
    140,442.46x = 193,811.28 × 76,780.26
  4. Step 4: Simplify right side
    140,442.46x = 14,880,880,469.33
  5. Step 5: Solve for x
    x = 14,880,880,469.33/140,442.46
  6. Step 6: Final answer
    x = 105,957.13

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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.