Home / 131,387.70-181,315.20-74,799

Finding the Fourth Proportional to 131,387.70, 181,315.20 and 74,799

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Solution

The fourth proportional to 131,387.70, 181,315.20 and 74,799 is: 103,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,387.70 : 181,315.20 = 74,799 : x
  2. Step 2: Convert to fraction form
    131,387.70/181,315.20 = 74,799/x
  3. Step 3: Cross multiply
    131,387.70x = 181,315.20 × 74,799
  4. Step 4: Simplify right side
    131,387.70x = 13,562,195,644.80
  5. Step 5: Solve for x
    x = 13,562,195,644.80/131,387.70
  6. Step 6: Final answer
    x = 103,222.72

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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.