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Finding the Fourth Proportional to 125.98, 173.86 and 73.51

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Solution

The fourth proportional to 125.98, 173.86 and 73.51 is: 101.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.98 : 173.86 = 73.51 : x
  2. Step 2: Convert to fraction form
    125.98/173.86 = 73.51/x
  3. Step 3: Cross multiply
    125.98x = 173.86 × 73.51
  4. Step 4: Simplify right side
    125.98x = 12,779.83
  5. Step 5: Solve for x
    x = 12,779.83/125.98
  6. Step 6: Final answer
    x = 101.45

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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.