Home / 140,400.78-193,730.65-79,972.59

Finding the Fourth Proportional to 140,400.78, 193,730.65 and 79,972.59

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Solution

The fourth proportional to 140,400.78, 193,730.65 and 79,972.59 is: 110,349.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,400.78 : 193,730.65 = 79,972.59 : x
  2. Step 2: Convert to fraction form
    140,400.78/193,730.65 = 79,972.59/x
  3. Step 3: Cross multiply
    140,400.78x = 193,730.65 × 79,972.59
  4. Step 4: Simplify right side
    140,400.78x = 15,493,141,842.88
  5. Step 5: Solve for x
    x = 15,493,141,842.88/140,400.78
  6. Step 6: Final answer
    x = 110,349.40

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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.