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Finding the Fourth Proportional to 163,355.57, 225,427.76 and 90,758.79

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Solution

The fourth proportional to 163,355.57, 225,427.76 and 90,758.79 is: 125,245.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,355.57 : 225,427.76 = 90,758.79 : x
  2. Step 2: Convert to fraction form
    163,355.57/225,427.76 = 90,758.79/x
  3. Step 3: Cross multiply
    163,355.57x = 225,427.76 × 90,758.79
  4. Step 4: Simplify right side
    163,355.57x = 20,459,550,933.57
  5. Step 5: Solve for x
    x = 20,459,550,933.57/163,355.57
  6. Step 6: Final answer
    x = 125,245.50

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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.