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Finding the Fourth Proportional to 121,088.90, 166,892.72 and 114,090.50

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Solution

The fourth proportional to 121,088.90, 166,892.72 and 114,090.50 is: 157,247.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,088.90 : 166,892.72 = 114,090.50 : x
  2. Step 2: Convert to fraction form
    121,088.90/166,892.72 = 114,090.50/x
  3. Step 3: Cross multiply
    121,088.90x = 166,892.72 × 114,090.50
  4. Step 4: Simplify right side
    121,088.90x = 19,040,873,871.16
  5. Step 5: Solve for x
    x = 19,040,873,871.16/121,088.90
  6. Step 6: Final answer
    x = 157,247.06

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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.