Home / 109,424.20-164,039.10-72,002.20

Finding the Fourth Proportional to 109,424.20, 164,039.10 and 72,002.20

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Solution

The fourth proportional to 109,424.20, 164,039.10 and 72,002.20 is: 107,939.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,424.20 : 164,039.10 = 72,002.20 : x
  2. Step 2: Convert to fraction form
    109,424.20/164,039.10 = 72,002.20/x
  3. Step 3: Cross multiply
    109,424.20x = 164,039.10 × 72,002.20
  4. Step 4: Simplify right side
    109,424.20x = 11,811,176,086.02
  5. Step 5: Solve for x
    x = 11,811,176,086.02/109,424.20
  6. Step 6: Final answer
    x = 107,939.34

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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.