Home / 142,536.08-196,701.54-78,879.80

Finding the Fourth Proportional to 142,536.08, 196,701.54 and 78,879.80

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Solution

The fourth proportional to 142,536.08, 196,701.54 and 78,879.80 is: 108,855.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,536.08 : 196,701.54 = 78,879.80 : x
  2. Step 2: Convert to fraction form
    142,536.08/196,701.54 = 78,879.80/x
  3. Step 3: Cross multiply
    142,536.08x = 196,701.54 × 78,879.80
  4. Step 4: Simplify right side
    142,536.08x = 15,515,778,134.89
  5. Step 5: Solve for x
    x = 15,515,778,134.89/142,536.08
  6. Step 6: Final answer
    x = 108,855.09

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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.