Home / 140,078.38-193,307.92-76,416.18

Finding the Fourth Proportional to 140,078.38, 193,307.92 and 76,416.18

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Solution

The fourth proportional to 140,078.38, 193,307.92 and 76,416.18 is: 105,454.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,078.38 : 193,307.92 = 76,416.18 : x
  2. Step 2: Convert to fraction form
    140,078.38/193,307.92 = 76,416.18/x
  3. Step 3: Cross multiply
    140,078.38x = 193,307.92 × 76,416.18
  4. Step 4: Simplify right side
    140,078.38x = 14,771,852,810.15
  5. Step 5: Solve for x
    x = 14,771,852,810.15/140,078.38
  6. Step 6: Final answer
    x = 105,454.20

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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.