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Finding the Fourth Proportional to 188,589.89, 283,070.73 and 138,529.46

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Solution

The fourth proportional to 188,589.89, 283,070.73 and 138,529.46 is: 207,930.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,589.89 : 283,070.73 = 138,529.46 : x
  2. Step 2: Convert to fraction form
    188,589.89/283,070.73 = 138,529.46/x
  3. Step 3: Cross multiply
    188,589.89x = 283,070.73 × 138,529.46
  4. Step 4: Simplify right side
    188,589.89x = 39,213,635,368.71
  5. Step 5: Solve for x
    x = 39,213,635,368.71/188,589.89
  6. Step 6: Final answer
    x = 207,930.74

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1.5x scale

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.