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Finding the Fourth Proportional to 245,086.15, 338,212.13 and 136,187.67

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Solution

The fourth proportional to 245,086.15, 338,212.13 and 136,187.67 is: 187,935.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,086.15 : 338,212.13 = 136,187.67 : x
  2. Step 2: Convert to fraction form
    245,086.15/338,212.13 = 136,187.67/x
  3. Step 3: Cross multiply
    245,086.15x = 338,212.13 × 136,187.67
  4. Step 4: Simplify right side
    245,086.15x = 46,060,321,950.44
  5. Step 5: Solve for x
    x = 46,060,321,950.44/245,086.15
  6. Step 6: Final answer
    x = 187,935.23

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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.