Home / 142,618.18-196,805.26-78,074.92

Finding the Fourth Proportional to 142,618.18, 196,805.26 and 78,074.92

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Solution

The fourth proportional to 142,618.18, 196,805.26 and 78,074.92 is: 107,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,618.18 : 196,805.26 = 78,074.92 : x
  2. Step 2: Convert to fraction form
    142,618.18/196,805.26 = 78,074.92/x
  3. Step 3: Cross multiply
    142,618.18x = 196,805.26 × 78,074.92
  4. Step 4: Simplify right side
    142,618.18x = 15,365,554,930.08
  5. Step 5: Solve for x
    x = 15,365,554,930.08/142,618.18
  6. Step 6: Final answer
    x = 107,739.10

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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.