Home / 129,278.04-178,343.82-75,565.32

Finding the Fourth Proportional to 129,278.04, 178,343.82 and 75,565.32

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Solution

The fourth proportional to 129,278.04, 178,343.82 and 75,565.32 is: 104,245.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,278.04 : 178,343.82 = 75,565.32 : x
  2. Step 2: Convert to fraction form
    129,278.04/178,343.82 = 75,565.32/x
  3. Step 3: Cross multiply
    129,278.04x = 178,343.82 × 75,565.32
  4. Step 4: Simplify right side
    129,278.04x = 13,476,607,828.32
  5. Step 5: Solve for x
    x = 13,476,607,828.32/129,278.04
  6. Step 6: Final answer
    x = 104,245.14

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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.