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Finding the Fourth Proportional to 125.93, 188.90 and 65.18

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Solution

The fourth proportional to 125.93, 188.90 and 65.18 is: 97.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.93 : 188.90 = 65.18 : x
  2. Step 2: Convert to fraction form
    125.93/188.90 = 65.18/x
  3. Step 3: Cross multiply
    125.93x = 188.90 × 65.18
  4. Step 4: Simplify right side
    125.93x = 12,312.18
  5. Step 5: Solve for x
    x = 12,312.18/125.93
  6. Step 6: Final answer
    x = 97.77

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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.