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Finding the Fourth Proportional to 161,892.86, 223,419.06 and 90,272.88

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Solution

The fourth proportional to 161,892.86, 223,419.06 and 90,272.88 is: 124,580.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,892.86 : 223,419.06 = 90,272.88 : x
  2. Step 2: Convert to fraction form
    161,892.86/223,419.06 = 90,272.88/x
  3. Step 3: Cross multiply
    161,892.86x = 223,419.06 × 90,272.88
  4. Step 4: Simplify right side
    161,892.86x = 20,168,681,993.09
  5. Step 5: Solve for x
    x = 20,168,681,993.09/161,892.86
  6. Step 6: Final answer
    x = 124,580.43

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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.