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Finding the Fourth Proportional to 163,123.10, 225,110.14 and 91,502.90

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Solution

The fourth proportional to 163,123.10, 225,110.14 and 91,502.90 is: 126,274.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,123.10 : 225,110.14 = 91,502.90 : x
  2. Step 2: Convert to fraction form
    163,123.10/225,110.14 = 91,502.90/x
  3. Step 3: Cross multiply
    163,123.10x = 225,110.14 × 91,502.90
  4. Step 4: Simplify right side
    163,123.10x = 20,598,230,629.41
  5. Step 5: Solve for x
    x = 20,598,230,629.41/163,123.10
  6. Step 6: Final answer
    x = 126,274.15

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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.