Home / 161,712.20-242,568.30-90,561.80

Finding the Fourth Proportional to 161,712.20, 242,568.30 and 90,561.80

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Solution

The fourth proportional to 161,712.20, 242,568.30 and 90,561.80 is: 135,842.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,712.20 : 242,568.30 = 90,561.80 : x
  2. Step 2: Convert to fraction form
    161,712.20/242,568.30 = 90,561.80/x
  3. Step 3: Cross multiply
    161,712.20x = 242,568.30 × 90,561.80
  4. Step 4: Simplify right side
    161,712.20x = 21,967,421,870.94
  5. Step 5: Solve for x
    x = 21,967,421,870.94/161,712.20
  6. Step 6: Final answer
    x = 135,842.70

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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.