Home / 125,712-188,657.92-45,749.84

Finding the Fourth Proportional to 125,712, 188,657.92 and 45,749.84

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Solution

The fourth proportional to 125,712, 188,657.92 and 45,749.84 is: 68,657.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,712 : 188,657.92 = 45,749.84 : x
  2. Step 2: Convert to fraction form
    125,712/188,657.92 = 45,749.84/x
  3. Step 3: Cross multiply
    125,712x = 188,657.92 × 45,749.84
  4. Step 4: Simplify right side
    125,712x = 8,631,069,654.73
  5. Step 5: Solve for x
    x = 8,631,069,654.73/125,712
  6. Step 6: Final answer
    x = 68,657.48

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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.