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Finding the Fourth Proportional to 188,266.84, 259,806.90 and 103,382.20

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Solution

The fourth proportional to 188,266.84, 259,806.90 and 103,382.20 is: 142,666.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,266.84 : 259,806.90 = 103,382.20 : x
  2. Step 2: Convert to fraction form
    188,266.84/259,806.90 = 103,382.20/x
  3. Step 3: Cross multiply
    188,266.84x = 259,806.90 × 103,382.20
  4. Step 4: Simplify right side
    188,266.84x = 26,859,408,897.18
  5. Step 5: Solve for x
    x = 26,859,408,897.18/188,266.84
  6. Step 6: Final answer
    x = 142,666.70

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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.