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Finding the Fourth Proportional to 188,695.88, 260,400.32 and 103,811.12

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Solution

The fourth proportional to 188,695.88, 260,400.32 and 103,811.12 is: 143,259.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,695.88 : 260,400.32 = 103,811.12 : x
  2. Step 2: Convert to fraction form
    188,695.88/260,400.32 = 103,811.12/x
  3. Step 3: Cross multiply
    188,695.88x = 260,400.32 × 103,811.12
  4. Step 4: Simplify right side
    188,695.88x = 27,032,447,046.50
  5. Step 5: Solve for x
    x = 27,032,447,046.50/188,695.88
  6. Step 6: Final answer
    x = 143,259.34

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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.