Home / 141,400.08-195,132.78-77,742

Finding the Fourth Proportional to 141,400.08, 195,132.78 and 77,742

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Solution

The fourth proportional to 141,400.08, 195,132.78 and 77,742 is: 107,284.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,400.08 : 195,132.78 = 77,742 : x
  2. Step 2: Convert to fraction form
    141,400.08/195,132.78 = 77,742/x
  3. Step 3: Cross multiply
    141,400.08x = 195,132.78 × 77,742
  4. Step 4: Simplify right side
    141,400.08x = 15,170,012,582.76
  5. Step 5: Solve for x
    x = 15,170,012,582.76/141,400.08
  6. Step 6: Final answer
    x = 107,284.33

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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.