Home / 231,513.50-319,529.58-136,020.18

Finding the Fourth Proportional to 231,513.50, 319,529.58 and 136,020.18

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Solution

The fourth proportional to 231,513.50, 319,529.58 and 136,020.18 is: 187,731.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,513.50 : 319,529.58 = 136,020.18 : x
  2. Step 2: Convert to fraction form
    231,513.50/319,529.58 = 136,020.18/x
  3. Step 3: Cross multiply
    231,513.50x = 319,529.58 × 136,020.18
  4. Step 4: Simplify right side
    231,513.50x = 43,462,470,986.92
  5. Step 5: Solve for x
    x = 43,462,470,986.92/231,513.50
  6. Step 6: Final answer
    x = 187,731.91

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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.