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Finding the Fourth Proportional to 210,571.57, 316,076.06 and 121,998.07

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Solution

The fourth proportional to 210,571.57, 316,076.06 and 121,998.07 is: 183,123.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,571.57 : 316,076.06 = 121,998.07 : x
  2. Step 2: Convert to fraction form
    210,571.57/316,076.06 = 121,998.07/x
  3. Step 3: Cross multiply
    210,571.57x = 316,076.06 × 121,998.07
  4. Step 4: Simplify right side
    210,571.57x = 38,560,669,293.20
  5. Step 5: Solve for x
    x = 38,560,669,293.20/210,571.57
  6. Step 6: Final answer
    x = 183,123.82

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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.