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Finding the Fourth Proportional to 121,737.66, 167,967.27 and 71,426.94

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Solution

The fourth proportional to 121,737.66, 167,967.27 and 71,426.94 is: 98,551.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,737.66 : 167,967.27 = 71,426.94 : x
  2. Step 2: Convert to fraction form
    121,737.66/167,967.27 = 71,426.94/x
  3. Step 3: Cross multiply
    121,737.66x = 167,967.27 × 71,426.94
  4. Step 4: Simplify right side
    121,737.66x = 11,997,388,116.25
  5. Step 5: Solve for x
    x = 11,997,388,116.25/121,737.66
  6. Step 6: Final answer
    x = 98,551.16

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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.