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Finding the Fourth Proportional to 204,963.74, 282,981.56 and 128,587.56

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Solution

The fourth proportional to 204,963.74, 282,981.56 and 128,587.56 is: 177,533.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,963.74 : 282,981.56 = 128,587.56 : x
  2. Step 2: Convert to fraction form
    204,963.74/282,981.56 = 128,587.56/x
  3. Step 3: Cross multiply
    204,963.74x = 282,981.56 × 128,587.56
  4. Step 4: Simplify right side
    204,963.74x = 36,387,908,325.39
  5. Step 5: Solve for x
    x = 36,387,908,325.39/204,963.74
  6. Step 6: Final answer
    x = 177,533.39

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1.5x scale

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.