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Finding the Fourth Proportional to 125,486.67, 173,171.74 and 74,509.58

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Solution

The fourth proportional to 125,486.67, 173,171.74 and 74,509.58 is: 102,823.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,486.67 : 173,171.74 = 74,509.58 : x
  2. Step 2: Convert to fraction form
    125,486.67/173,171.74 = 74,509.58/x
  3. Step 3: Cross multiply
    125,486.67x = 173,171.74 × 74,509.58
  4. Step 4: Simplify right side
    125,486.67x = 12,902,953,242.72
  5. Step 5: Solve for x
    x = 12,902,953,242.72/125,486.67
  6. Step 6: Final answer
    x = 102,823.30

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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.