Home / 119,047.20-164,286.88-65,331.28

Finding the Fourth Proportional to 119,047.20, 164,286.88 and 65,331.28

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Solution

The fourth proportional to 119,047.20, 164,286.88 and 65,331.28 is: 90,158.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,047.20 : 164,286.88 = 65,331.28 : x
  2. Step 2: Convert to fraction form
    119,047.20/164,286.88 = 65,331.28/x
  3. Step 3: Cross multiply
    119,047.20x = 164,286.88 × 65,331.28
  4. Step 4: Simplify right side
    119,047.20x = 10,733,072,157.61
  5. Step 5: Solve for x
    x = 10,733,072,157.61/119,047.20
  6. Step 6: Final answer
    x = 90,158.12

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Why These Related Problems?

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