Home / 131,405.30-181,339.50-74,816.72

Finding the Fourth Proportional to 131,405.30, 181,339.50 and 74,816.72

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Solution

The fourth proportional to 131,405.30, 181,339.50 and 74,816.72 is: 103,247.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,405.30 : 181,339.50 = 74,816.72 : x
  2. Step 2: Convert to fraction form
    131,405.30/181,339.50 = 74,816.72/x
  3. Step 3: Cross multiply
    131,405.30x = 181,339.50 × 74,816.72
  4. Step 4: Simplify right side
    131,405.30x = 13,567,226,596.44
  5. Step 5: Solve for x
    x = 13,567,226,596.44/131,405.30
  6. Step 6: Final answer
    x = 103,247.18

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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.