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Finding the Fourth Proportional to 188,454.97, 260,065.78 and 103,570.21

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Solution

The fourth proportional to 188,454.97, 260,065.78 and 103,570.21 is: 142,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,454.97 : 260,065.78 = 103,570.21 : x
  2. Step 2: Convert to fraction form
    188,454.97/260,065.78 = 103,570.21/x
  3. Step 3: Cross multiply
    188,454.97x = 260,065.78 × 103,570.21
  4. Step 4: Simplify right side
    188,454.97x = 26,935,067,448.41
  5. Step 5: Solve for x
    x = 26,935,067,448.41/188,454.97
  6. Step 6: Final answer
    x = 142,925.75

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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.