Home / 142,519.48-196,675.31-78,857.73

Finding the Fourth Proportional to 142,519.48, 196,675.31 and 78,857.73

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Solution

The fourth proportional to 142,519.48, 196,675.31 and 78,857.73 is: 108,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,519.48 : 196,675.31 = 78,857.73 : x
  2. Step 2: Convert to fraction form
    142,519.48/196,675.31 = 78,857.73/x
  3. Step 3: Cross multiply
    142,519.48x = 196,675.31 × 78,857.73
  4. Step 4: Simplify right side
    142,519.48x = 15,509,368,690.79
  5. Step 5: Solve for x
    x = 15,509,368,690.79/142,519.48
  6. Step 6: Final answer
    x = 108,822.80

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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.