Home / 128,850.84-193,333.80-49,971.24

Finding the Fourth Proportional to 128,850.84, 193,333.80 and 49,971.24

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Solution

The fourth proportional to 128,850.84, 193,333.80 and 49,971.24 is: 74,979.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,850.84 : 193,333.80 = 49,971.24 : x
  2. Step 2: Convert to fraction form
    128,850.84/193,333.80 = 49,971.24/x
  3. Step 3: Cross multiply
    128,850.84x = 193,333.80 × 49,971.24
  4. Step 4: Simplify right side
    128,850.84x = 9,661,129,719.91
  5. Step 5: Solve for x
    x = 9,661,129,719.91/128,850.84
  6. Step 6: Final answer
    x = 74,979.18

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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.