Home / 142,369.80-196,453.20-78,698.92

Finding the Fourth Proportional to 142,369.80, 196,453.20 and 78,698.92

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Solution

The fourth proportional to 142,369.80, 196,453.20 and 78,698.92 is: 108,595.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,369.80 : 196,453.20 = 78,698.92 : x
  2. Step 2: Convert to fraction form
    142,369.80/196,453.20 = 78,698.92/x
  3. Step 3: Cross multiply
    142,369.80x = 196,453.20 × 78,698.92
  4. Step 4: Simplify right side
    142,369.80x = 15,460,654,670.54
  5. Step 5: Solve for x
    x = 15,460,654,670.54/142,369.80
  6. Step 6: Final answer
    x = 108,595.04

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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.