Home / 217,150.25-299,660.10-120,349.98

Finding the Fourth Proportional to 217,150.25, 299,660.10 and 120,349.98

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Solution

The fourth proportional to 217,150.25, 299,660.10 and 120,349.98 is: 166,078.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,150.25 : 299,660.10 = 120,349.98 : x
  2. Step 2: Convert to fraction form
    217,150.25/299,660.10 = 120,349.98/x
  3. Step 3: Cross multiply
    217,150.25x = 299,660.10 × 120,349.98
  4. Step 4: Simplify right side
    217,150.25x = 36,064,087,041.80
  5. Step 5: Solve for x
    x = 36,064,087,041.80/217,150.25
  6. Step 6: Final answer
    x = 166,078.96

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1.5x scale

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.