Home / 129,345.26-178,441.32-74,125.34

Finding the Fourth Proportional to 129,345.26, 178,441.32 and 74,125.34

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Solution

The fourth proportional to 129,345.26, 178,441.32 and 74,125.34 is: 102,261.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,345.26 : 178,441.32 = 74,125.34 : x
  2. Step 2: Convert to fraction form
    129,345.26/178,441.32 = 74,125.34/x
  3. Step 3: Cross multiply
    129,345.26x = 178,441.32 × 74,125.34
  4. Step 4: Simplify right side
    129,345.26x = 13,227,023,515.05
  5. Step 5: Solve for x
    x = 13,227,023,515.05/129,345.26
  6. Step 6: Final answer
    x = 102,261.37

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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.