Home / 107,763.65-161,818.28-72,858.05

Finding the Fourth Proportional to 107,763.65, 161,818.28 and 72,858.05

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Solution

The fourth proportional to 107,763.65, 161,818.28 and 72,858.05 is: 109,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,763.65 : 161,818.28 = 72,858.05 : x
  2. Step 2: Convert to fraction form
    107,763.65/161,818.28 = 72,858.05/x
  3. Step 3: Cross multiply
    107,763.65x = 161,818.28 × 72,858.05
  4. Step 4: Simplify right side
    107,763.65x = 11,789,763,970.86
  5. Step 5: Solve for x
    x = 11,789,763,970.86/107,763.65
  6. Step 6: Final answer
    x = 109,403.90

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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.