Home / 129,723.07-178,949.74-105,551.02

Finding the Fourth Proportional to 129,723.07, 178,949.74 and 105,551.02

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Solution

The fourth proportional to 129,723.07, 178,949.74 and 105,551.02 is: 145,605.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,723.07 : 178,949.74 = 105,551.02 : x
  2. Step 2: Convert to fraction form
    129,723.07/178,949.74 = 105,551.02/x
  3. Step 3: Cross multiply
    129,723.07x = 178,949.74 × 105,551.02
  4. Step 4: Simplify right side
    129,723.07x = 18,888,327,585.73
  5. Step 5: Solve for x
    x = 18,888,327,585.73/129,723.07
  6. Step 6: Final answer
    x = 145,605.00

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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.