Home / 74,298.40-111,447.20-18,138.80

Finding the Fourth Proportional to 74,298.40, 111,447.20 and 18,138.80

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Solution

The fourth proportional to 74,298.40, 111,447.20 and 18,138.80 is: 27,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,298.40 : 111,447.20 = 18,138.80 : x
  2. Step 2: Convert to fraction form
    74,298.40/111,447.20 = 18,138.80/x
  3. Step 3: Cross multiply
    74,298.40x = 111,447.20 × 18,138.80
  4. Step 4: Simplify right side
    74,298.40x = 2,021,518,471.36
  5. Step 5: Solve for x
    x = 2,021,518,471.36/74,298.40
  6. Step 6: Final answer
    x = 27,208.10

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1.5x scale

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.