Home / 102,262.20-153,189.06-81,237.72

Finding the Fourth Proportional to 102,262.20, 153,189.06 and 81,237.72

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Solution

The fourth proportional to 102,262.20, 153,189.06 and 81,237.72 is: 121,694.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,262.20 : 153,189.06 = 81,237.72 : x
  2. Step 2: Convert to fraction form
    102,262.20/153,189.06 = 81,237.72/x
  3. Step 3: Cross multiply
    102,262.20x = 153,189.06 × 81,237.72
  4. Step 4: Simplify right side
    102,262.20x = 12,444,729,963.34
  5. Step 5: Solve for x
    x = 12,444,729,963.34/102,262.20
  6. Step 6: Final answer
    x = 121,694.33

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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.