Home / 140,105.88-193,344.12-76,442.40

Finding the Fourth Proportional to 140,105.88, 193,344.12 and 76,442.40

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Solution

The fourth proportional to 140,105.88, 193,344.12 and 76,442.40 is: 105,489.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,105.88 : 193,344.12 = 76,442.40 : x
  2. Step 2: Convert to fraction form
    140,105.88/193,344.12 = 76,442.40/x
  3. Step 3: Cross multiply
    140,105.88x = 193,344.12 × 76,442.40
  4. Step 4: Simplify right side
    140,105.88x = 14,779,688,558.69
  5. Step 5: Solve for x
    x = 14,779,688,558.69/140,105.88
  6. Step 6: Final answer
    x = 105,489.42

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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.