Home / 142,002.48-195,964.08-78,340.26

Finding the Fourth Proportional to 142,002.48, 195,964.08 and 78,340.26

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Solution

The fourth proportional to 142,002.48, 195,964.08 and 78,340.26 is: 108,109.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,002.48 : 195,964.08 = 78,340.26 : x
  2. Step 2: Convert to fraction form
    142,002.48/195,964.08 = 78,340.26/x
  3. Step 3: Cross multiply
    142,002.48x = 195,964.08 × 78,340.26
  4. Step 4: Simplify right side
    142,002.48x = 15,351,876,977.86
  5. Step 5: Solve for x
    x = 15,351,876,977.86/142,002.48
  6. Step 6: Final answer
    x = 108,109.92

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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.