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Finding the Fourth Proportional to 121,473.90, 167,712.03 and 76,213.98

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Solution

The fourth proportional to 121,473.90, 167,712.03 and 76,213.98 is: 105,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,473.90 : 167,712.03 = 76,213.98 : x
  2. Step 2: Convert to fraction form
    121,473.90/167,712.03 = 76,213.98/x
  3. Step 3: Cross multiply
    121,473.90x = 167,712.03 × 76,213.98
  4. Step 4: Simplify right side
    121,473.90x = 12,782,001,300.18
  5. Step 5: Solve for x
    x = 12,782,001,300.18/121,473.90
  6. Step 6: Final answer
    x = 105,224.26

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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.