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Finding the Fourth Proportional to 163,504.32, 225,656 and 91,887.36

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Solution

The fourth proportional to 163,504.32, 225,656 and 91,887.36 is: 126,815.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,504.32 : 225,656 = 91,887.36 : x
  2. Step 2: Convert to fraction form
    163,504.32/225,656 = 91,887.36/x
  3. Step 3: Cross multiply
    163,504.32x = 225,656 × 91,887.36
  4. Step 4: Simplify right side
    163,504.32x = 20,734,934,108.16
  5. Step 5: Solve for x
    x = 20,734,934,108.16/163,504.32
  6. Step 6: Final answer
    x = 126,815.82

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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.