Home / 140,139.86-193,397.28-79,719.26

Finding the Fourth Proportional to 140,139.86, 193,397.28 and 79,719.26

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Solution

The fourth proportional to 140,139.86, 193,397.28 and 79,719.26 is: 110,015.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,139.86 : 193,397.28 = 79,719.26 : x
  2. Step 2: Convert to fraction form
    140,139.86/193,397.28 = 79,719.26/x
  3. Step 3: Cross multiply
    140,139.86x = 193,397.28 × 79,719.26
  4. Step 4: Simplify right side
    140,139.86x = 15,417,488,047.61
  5. Step 5: Solve for x
    x = 15,417,488,047.61/140,139.86
  6. Step 6: Final answer
    x = 110,015.01

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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.