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Finding the Fourth Proportional to 163,030.74, 224,979.57 and 91,410.54

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Solution

The fourth proportional to 163,030.74, 224,979.57 and 91,410.54 is: 126,144.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,030.74 : 224,979.57 = 91,410.54 : x
  2. Step 2: Convert to fraction form
    163,030.74/224,979.57 = 91,410.54/x
  3. Step 3: Cross multiply
    163,030.74x = 224,979.57 × 91,410.54
  4. Step 4: Simplify right side
    163,030.74x = 20,565,503,982.67
  5. Step 5: Solve for x
    x = 20,565,503,982.67/163,030.74
  6. Step 6: Final answer
    x = 126,144.95

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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.