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Finding the Fourth Proportional to 121,155.71, 167,166.31 and 101,848.05

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Solution

The fourth proportional to 121,155.71, 167,166.31 and 101,848.05 is: 140,526.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,155.71 : 167,166.31 = 101,848.05 : x
  2. Step 2: Convert to fraction form
    121,155.71/167,166.31 = 101,848.05/x
  3. Step 3: Cross multiply
    121,155.71x = 167,166.31 × 101,848.05
  4. Step 4: Simplify right side
    121,155.71x = 17,025,562,189.96
  5. Step 5: Solve for x
    x = 17,025,562,189.96/121,155.71
  6. Step 6: Final answer
    x = 140,526.29

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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.