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Finding the Fourth Proportional to 125.29, 188 and 53.13

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Solution

The fourth proportional to 125.29, 188 and 53.13 is: 79.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.29 : 188 = 53.13 : x
  2. Step 2: Convert to fraction form
    125.29/188 = 53.13/x
  3. Step 3: Cross multiply
    125.29x = 188 × 53.13
  4. Step 4: Simplify right side
    125.29x = 9,988.44
  5. Step 5: Solve for x
    x = 9,988.44/125.29
  6. Step 6: Final answer
    x = 79.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.