Home / 140,150.78-193,402.02-79,712.90

Finding the Fourth Proportional to 140,150.78, 193,402.02 and 79,712.90

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Solution

The fourth proportional to 140,150.78, 193,402.02 and 79,712.90 is: 110,000.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,150.78 : 193,402.02 = 79,712.90 : x
  2. Step 2: Convert to fraction form
    140,150.78/193,402.02 = 79,712.90/x
  3. Step 3: Cross multiply
    140,150.78x = 193,402.02 × 79,712.90
  4. Step 4: Simplify right side
    140,150.78x = 15,416,635,880.06
  5. Step 5: Solve for x
    x = 15,416,635,880.06/140,150.78
  6. Step 6: Final answer
    x = 110,000.36

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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.