Home / 140,349.12-193,684.32-76,689.60

Finding the Fourth Proportional to 140,349.12, 193,684.32 and 76,689.60

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Solution

The fourth proportional to 140,349.12, 193,684.32 and 76,689.60 is: 105,833.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,349.12 : 193,684.32 = 76,689.60 : x
  2. Step 2: Convert to fraction form
    140,349.12/193,684.32 = 76,689.60/x
  3. Step 3: Cross multiply
    140,349.12x = 193,684.32 × 76,689.60
  4. Step 4: Simplify right side
    140,349.12x = 14,853,573,027.07
  5. Step 5: Solve for x
    x = 14,853,573,027.07/140,349.12
  6. Step 6: Final answer
    x = 105,833.03

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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.