Home / 129,665.16-178,955.46-75,971.61

Finding the Fourth Proportional to 129,665.16, 178,955.46 and 75,971.61

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Solution

The fourth proportional to 129,665.16, 178,955.46 and 75,971.61 is: 104,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,665.16 : 178,955.46 = 75,971.61 : x
  2. Step 2: Convert to fraction form
    129,665.16/178,955.46 = 75,971.61/x
  3. Step 3: Cross multiply
    129,665.16x = 178,955.46 × 75,971.61
  4. Step 4: Simplify right side
    129,665.16x = 13,595,534,414.49
  5. Step 5: Solve for x
    x = 13,595,534,414.49/129,665.16
  6. Step 6: Final answer
    x = 104,851.10

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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.