Home / 129,317.19-178,430.96-75,591.81

Finding the Fourth Proportional to 129,317.19, 178,430.96 and 75,591.81

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Solution

The fourth proportional to 129,317.19, 178,430.96 and 75,591.81 is: 104,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,317.19 : 178,430.96 = 75,591.81 : x
  2. Step 2: Convert to fraction form
    129,317.19/178,430.96 = 75,591.81/x
  3. Step 3: Cross multiply
    129,317.19x = 178,430.96 × 75,591.81
  4. Step 4: Simplify right side
    129,317.19x = 13,487,919,226.44
  5. Step 5: Solve for x
    x = 13,487,919,226.44/129,317.19
  6. Step 6: Final answer
    x = 104,301.05

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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.