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Finding the Fourth Proportional to 121,000.60, 181,533.30 and 107,943.40

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Solution

The fourth proportional to 121,000.60, 181,533.30 and 107,943.40 is: 161,944.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,000.60 : 181,533.30 = 107,943.40 : x
  2. Step 2: Convert to fraction form
    121,000.60/181,533.30 = 107,943.40/x
  3. Step 3: Cross multiply
    121,000.60x = 181,533.30 × 107,943.40
  4. Step 4: Simplify right side
    121,000.60x = 19,595,321,615.22
  5. Step 5: Solve for x
    x = 19,595,321,615.22/121,000.60
  6. Step 6: Final answer
    x = 161,944.00

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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.