Home / 102,628.74-153,987.45-55,188.38

Finding the Fourth Proportional to 102,628.74, 153,987.45 and 55,188.38

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Solution

The fourth proportional to 102,628.74, 153,987.45 and 55,188.38 is: 82,806.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,628.74 : 153,987.45 = 55,188.38 : x
  2. Step 2: Convert to fraction form
    102,628.74/153,987.45 = 55,188.38/x
  3. Step 3: Cross multiply
    102,628.74x = 153,987.45 × 55,188.38
  4. Step 4: Simplify right side
    102,628.74x = 8,498,317,920.30
  5. Step 5: Solve for x
    x = 8,498,317,920.30/102,628.74
  6. Step 6: Final answer
    x = 82,806.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.