Home / 120,727.18-181,094.20-31,980.70

Finding the Fourth Proportional to 120,727.18, 181,094.20 and 31,980.70

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Solution

The fourth proportional to 120,727.18, 181,094.20 and 31,980.70 is: 47,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,727.18 : 181,094.20 = 31,980.70 : x
  2. Step 2: Convert to fraction form
    120,727.18/181,094.20 = 31,980.70/x
  3. Step 3: Cross multiply
    120,727.18x = 181,094.20 × 31,980.70
  4. Step 4: Simplify right side
    120,727.18x = 5,791,519,281.94
  5. Step 5: Solve for x
    x = 5,791,519,281.94/120,727.18
  6. Step 6: Final answer
    x = 47,971.96

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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.