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Finding the Fourth Proportional to 121,422.60, 182,133.90 and 114,035.40

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Solution

The fourth proportional to 121,422.60, 182,133.90 and 114,035.40 is: 171,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,422.60 : 182,133.90 = 114,035.40 : x
  2. Step 2: Convert to fraction form
    121,422.60/182,133.90 = 114,035.40/x
  3. Step 3: Cross multiply
    121,422.60x = 182,133.90 × 114,035.40
  4. Step 4: Simplify right side
    121,422.60x = 20,769,712,140.06
  5. Step 5: Solve for x
    x = 20,769,712,140.06/121,422.60
  6. Step 6: Final answer
    x = 171,053.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.