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Finding the Fourth Proportional to 188,659.80, 282,989.70 and 64,001.88

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Solution

The fourth proportional to 188,659.80, 282,989.70 and 64,001.88 is: 96,002.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,659.80 : 282,989.70 = 64,001.88 : x
  2. Step 2: Convert to fraction form
    188,659.80/282,989.70 = 64,001.88/x
  3. Step 3: Cross multiply
    188,659.80x = 282,989.70 × 64,001.88
  4. Step 4: Simplify right side
    188,659.80x = 18,111,872,820.64
  5. Step 5: Solve for x
    x = 18,111,872,820.64/188,659.80
  6. Step 6: Final answer
    x = 96,002.82

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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.