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Finding the Fourth Proportional to 181,976.32, 272,779.80 and 69,627.70

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Solution

The fourth proportional to 181,976.32, 272,779.80 and 69,627.70 is: 104,370.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,976.32 : 272,779.80 = 69,627.70 : x
  2. Step 2: Convert to fraction form
    181,976.32/272,779.80 = 69,627.70/x
  3. Step 3: Cross multiply
    181,976.32x = 272,779.80 × 69,627.70
  4. Step 4: Simplify right side
    181,976.32x = 18,993,030,080.46
  5. Step 5: Solve for x
    x = 18,993,030,080.46/181,976.32
  6. Step 6: Final answer
    x = 104,370.89

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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.