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Finding the Fourth Proportional to 125,630, 188,531.40 and 51,758

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Solution

The fourth proportional to 125,630, 188,531.40 and 51,758 is: 77,672.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,630 : 188,531.40 = 51,758 : x
  2. Step 2: Convert to fraction form
    125,630/188,531.40 = 51,758/x
  3. Step 3: Cross multiply
    125,630x = 188,531.40 × 51,758
  4. Step 4: Simplify right side
    125,630x = 9,758,008,201.20
  5. Step 5: Solve for x
    x = 9,758,008,201.20/125,630
  6. Step 6: Final answer
    x = 77,672.60

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