Home / 105,121.13-145,067.29-67,395.38

Finding the Fourth Proportional to 105,121.13, 145,067.29 and 67,395.38

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Solution

The fourth proportional to 105,121.13, 145,067.29 and 67,395.38 is: 93,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,121.13 : 145,067.29 = 67,395.38 : x
  2. Step 2: Convert to fraction form
    105,121.13/145,067.29 = 67,395.38/x
  3. Step 3: Cross multiply
    105,121.13x = 145,067.29 × 67,395.38
  4. Step 4: Simplify right side
    105,121.13x = 9,776,864,241.30
  5. Step 5: Solve for x
    x = 9,776,864,241.30/105,121.13
  6. Step 6: Final answer
    x = 93,005.70

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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.