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Finding the Fourth Proportional to 163,376.90, 225,449.01 and 91,763.58

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Solution

The fourth proportional to 163,376.90, 225,449.01 and 91,763.58 is: 126,627.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,376.90 : 225,449.01 = 91,763.58 : x
  2. Step 2: Convert to fraction form
    163,376.90/225,449.01 = 91,763.58/x
  3. Step 3: Cross multiply
    163,376.90x = 225,449.01 × 91,763.58
  4. Step 4: Simplify right side
    163,376.90x = 20,688,008,265.06
  5. Step 5: Solve for x
    x = 20,688,008,265.06/163,376.90
  6. Step 6: Final answer
    x = 126,627.50

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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.