Home / 140,000.80-193,201.20-76,338.72

Finding the Fourth Proportional to 140,000.80, 193,201.20 and 76,338.72

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Solution

The fourth proportional to 140,000.80, 193,201.20 and 76,338.72 is: 105,347.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,000.80 : 193,201.20 = 76,338.72 : x
  2. Step 2: Convert to fraction form
    140,000.80/193,201.20 = 76,338.72/x
  3. Step 3: Cross multiply
    140,000.80x = 193,201.20 × 76,338.72
  4. Step 4: Simplify right side
    140,000.80x = 14,748,732,310.46
  5. Step 5: Solve for x
    x = 14,748,732,310.46/140,000.80
  6. Step 6: Final answer
    x = 105,347.49

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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.