Home / 140,145.78-193,395.12-79,707.90

Finding the Fourth Proportional to 140,145.78, 193,395.12 and 79,707.90

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Solution

The fourth proportional to 140,145.78, 193,395.12 and 79,707.90 is: 109,993.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,145.78 : 193,395.12 = 79,707.90 : x
  2. Step 2: Convert to fraction form
    140,145.78/193,395.12 = 79,707.90/x
  3. Step 3: Cross multiply
    140,145.78x = 193,395.12 × 79,707.90
  4. Step 4: Simplify right side
    140,145.78x = 15,415,118,885.45
  5. Step 5: Solve for x
    x = 15,415,118,885.45/140,145.78
  6. Step 6: Final answer
    x = 109,993.46

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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.