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Finding the Fourth Proportional to 125,132.67, 172,686.59 and 76,074.21

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Solution

The fourth proportional to 125,132.67, 172,686.59 and 76,074.21 is: 104,984.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,132.67 : 172,686.59 = 76,074.21 : x
  2. Step 2: Convert to fraction form
    125,132.67/172,686.59 = 76,074.21/x
  3. Step 3: Cross multiply
    125,132.67x = 172,686.59 × 76,074.21
  4. Step 4: Simplify right side
    125,132.67x = 13,136,994,668.04
  5. Step 5: Solve for x
    x = 13,136,994,668.04/125,132.67
  6. Step 6: Final answer
    x = 104,984.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.