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Finding the Fourth Proportional to 163,125.81, 225,113.25 and 90,539.82

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Solution

The fourth proportional to 163,125.81, 225,113.25 and 90,539.82 is: 124,944.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,125.81 : 225,113.25 = 90,539.82 : x
  2. Step 2: Convert to fraction form
    163,125.81/225,113.25 = 90,539.82/x
  3. Step 3: Cross multiply
    163,125.81x = 225,113.25 × 90,539.82
  4. Step 4: Simplify right side
    163,125.81x = 20,381,713,134.62
  5. Step 5: Solve for x
    x = 20,381,713,134.62/163,125.81
  6. Step 6: Final answer
    x = 124,944.75

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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.