Home / 120,262.08-165,974.76-77,287.80

Finding the Fourth Proportional to 120,262.08, 165,974.76 and 77,287.80

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Solution

The fourth proportional to 120,262.08, 165,974.76 and 77,287.80 is: 106,665.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,262.08 : 165,974.76 = 77,287.80 : x
  2. Step 2: Convert to fraction form
    120,262.08/165,974.76 = 77,287.80/x
  3. Step 3: Cross multiply
    120,262.08x = 165,974.76 × 77,287.80
  4. Step 4: Simplify right side
    120,262.08x = 12,827,824,055.93
  5. Step 5: Solve for x
    x = 12,827,824,055.93/120,262.08
  6. Step 6: Final answer
    x = 106,665.58

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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.