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Finding the Fourth Proportional to 124,074.80, 186,041.70 and 84,679.64

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Solution

The fourth proportional to 124,074.80, 186,041.70 and 84,679.64 is: 126,971.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,074.80 : 186,041.70 = 84,679.64 : x
  2. Step 2: Convert to fraction form
    124,074.80/186,041.70 = 84,679.64/x
  3. Step 3: Cross multiply
    124,074.80x = 186,041.70 × 84,679.64
  4. Step 4: Simplify right side
    124,074.80x = 15,753,944,180.99
  5. Step 5: Solve for x
    x = 15,753,944,180.99/124,074.80
  6. Step 6: Final answer
    x = 126,971.34

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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.