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Finding the Fourth Proportional to 188,551.64, 259,946.58 and 128,017.20

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Solution

The fourth proportional to 188,551.64, 259,946.58 and 128,017.20 is: 176,490.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,551.64 : 259,946.58 = 128,017.20 : x
  2. Step 2: Convert to fraction form
    188,551.64/259,946.58 = 128,017.20/x
  3. Step 3: Cross multiply
    188,551.64x = 259,946.58 × 128,017.20
  4. Step 4: Simplify right side
    188,551.64x = 33,277,633,321.18
  5. Step 5: Solve for x
    x = 33,277,633,321.18/188,551.64
  6. Step 6: Final answer
    x = 176,490.82

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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.