Home / 128,708.40-193,088.36-44,471.64

Finding the Fourth Proportional to 128,708.40, 193,088.36 and 44,471.64

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Solution

The fourth proportional to 128,708.40, 193,088.36 and 44,471.64 is: 66,716.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,708.40 : 193,088.36 = 44,471.64 : x
  2. Step 2: Convert to fraction form
    128,708.40/193,088.36 = 44,471.64/x
  3. Step 3: Cross multiply
    128,708.40x = 193,088.36 × 44,471.64
  4. Step 4: Simplify right side
    128,708.40x = 8,586,956,034.11
  5. Step 5: Solve for x
    x = 8,586,956,034.11/128,708.40
  6. Step 6: Final answer
    x = 66,716.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.