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Finding the Fourth Proportional to 163,236.82, 225,289.53 and 90,656.02

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Solution

The fourth proportional to 163,236.82, 225,289.53 and 90,656.02 is: 125,117.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,236.82 : 225,289.53 = 90,656.02 : x
  2. Step 2: Convert to fraction form
    163,236.82/225,289.53 = 90,656.02/x
  3. Step 3: Cross multiply
    163,236.82x = 225,289.53 × 90,656.02
  4. Step 4: Simplify right side
    163,236.82x = 20,423,852,137.47
  5. Step 5: Solve for x
    x = 20,423,852,137.47/163,236.82
  6. Step 6: Final answer
    x = 125,117.92

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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.