Home / 129,314.43-178,427.17-75,589.06

Finding the Fourth Proportional to 129,314.43, 178,427.17 and 75,589.06

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Solution

The fourth proportional to 129,314.43, 178,427.17 and 75,589.06 is: 104,297.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,314.43 : 178,427.17 = 75,589.06 : x
  2. Step 2: Convert to fraction form
    129,314.43/178,427.17 = 75,589.06/x
  3. Step 3: Cross multiply
    129,314.43x = 178,427.17 × 75,589.06
  4. Step 4: Simplify right side
    129,314.43x = 13,487,141,707.18
  5. Step 5: Solve for x
    x = 13,487,141,707.18/129,314.43
  6. Step 6: Final answer
    x = 104,297.26

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1.5x scale

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.