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Finding the Fourth Proportional to 188,642.17, 260,320.71 and 103,759.21

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Solution

The fourth proportional to 188,642.17, 260,320.71 and 103,759.21 is: 143,184.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,642.17 : 260,320.71 = 103,759.21 : x
  2. Step 2: Convert to fraction form
    188,642.17/260,320.71 = 103,759.21/x
  3. Step 3: Cross multiply
    188,642.17x = 260,320.71 × 103,759.21
  4. Step 4: Simplify right side
    188,642.17x = 27,010,671,216.24
  5. Step 5: Solve for x
    x = 27,010,671,216.24/188,642.17
  6. Step 6: Final answer
    x = 143,184.69

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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.