Home / 188,638.12-260,320.74-103,761.64

Finding the Fourth Proportional to 188,638.12, 260,320.74 and 103,761.64

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Solution

The fourth proportional to 188,638.12, 260,320.74 and 103,761.64 is: 143,191.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,638.12 : 260,320.74 = 103,761.64 : x
  2. Step 2: Convert to fraction form
    188,638.12/260,320.74 = 103,761.64/x
  3. Step 3: Cross multiply
    188,638.12x = 260,320.74 × 103,761.64
  4. Step 4: Simplify right side
    188,638.12x = 27,011,306,908.41
  5. Step 5: Solve for x
    x = 27,011,306,908.41/188,638.12
  6. Step 6: Final answer
    x = 143,191.14

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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.