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Finding the Fourth Proportional to 163,086.16, 225,058.50 and 90,500.08

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Solution

The fourth proportional to 163,086.16, 225,058.50 and 90,500.08 is: 124,889.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,086.16 : 225,058.50 = 90,500.08 : x
  2. Step 2: Convert to fraction form
    163,086.16/225,058.50 = 90,500.08/x
  3. Step 3: Cross multiply
    163,086.16x = 225,058.50 × 90,500.08
  4. Step 4: Simplify right side
    163,086.16x = 20,367,812,254.68
  5. Step 5: Solve for x
    x = 20,367,812,254.68/163,086.16
  6. Step 6: Final answer
    x = 124,889.89

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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.