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Finding the Fourth Proportional to 163,563.76, 225,889.32 and 112,708.72

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Solution

The fourth proportional to 163,563.76, 225,889.32 and 112,708.72 is: 155,656.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,563.76 : 225,889.32 = 112,708.72 : x
  2. Step 2: Convert to fraction form
    163,563.76/225,889.32 = 112,708.72/x
  3. Step 3: Cross multiply
    163,563.76x = 225,889.32 × 112,708.72
  4. Step 4: Simplify right side
    163,563.76x = 25,459,696,118.87
  5. Step 5: Solve for x
    x = 25,459,696,118.87/163,563.76
  6. Step 6: Final answer
    x = 155,656.09

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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.