Home / 141,789.54-195,678.30-78,127.32

Finding the Fourth Proportional to 141,789.54, 195,678.30 and 78,127.32

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Solution

The fourth proportional to 141,789.54, 195,678.30 and 78,127.32 is: 107,820.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,789.54 : 195,678.30 = 78,127.32 : x
  2. Step 2: Convert to fraction form
    141,789.54/195,678.30 = 78,127.32/x
  3. Step 3: Cross multiply
    141,789.54x = 195,678.30 × 78,127.32
  4. Step 4: Simplify right side
    141,789.54x = 15,287,821,161.16
  5. Step 5: Solve for x
    x = 15,287,821,161.16/141,789.54
  6. Step 6: Final answer
    x = 107,820.51

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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.