Home / 204,055.15-306,082.73-128,931.70

Finding the Fourth Proportional to 204,055.15, 306,082.73 and 128,931.70

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Solution

The fourth proportional to 204,055.15, 306,082.73 and 128,931.70 is: 193,397.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,055.15 : 306,082.73 = 128,931.70 : x
  2. Step 2: Convert to fraction form
    204,055.15/306,082.73 = 128,931.70/x
  3. Step 3: Cross multiply
    204,055.15x = 306,082.73 × 128,931.70
  4. Step 4: Simplify right side
    204,055.15x = 39,463,766,719.54
  5. Step 5: Solve for x
    x = 39,463,766,719.54/204,055.15
  6. Step 6: Final answer
    x = 193,397.55

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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.