Home / 140,220.12-193,502.30-76,557.72

Finding the Fourth Proportional to 140,220.12, 193,502.30 and 76,557.72

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Solution

The fourth proportional to 140,220.12, 193,502.30 and 76,557.72 is: 105,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,220.12 : 193,502.30 = 76,557.72 : x
  2. Step 2: Convert to fraction form
    140,220.12/193,502.30 = 76,557.72/x
  3. Step 3: Cross multiply
    140,220.12x = 193,502.30 × 76,557.72
  4. Step 4: Simplify right side
    140,220.12x = 14,814,094,902.76
  5. Step 5: Solve for x
    x = 14,814,094,902.76/140,220.12
  6. Step 6: Final answer
    x = 105,648.85

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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.