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Finding the Fourth Proportional to 121,427.88, 167,471.46 and 101,971.80

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Solution

The fourth proportional to 121,427.88, 167,471.46 and 101,971.80 is: 140,637.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,427.88 : 167,471.46 = 101,971.80 : x
  2. Step 2: Convert to fraction form
    121,427.88/167,471.46 = 101,971.80/x
  3. Step 3: Cross multiply
    121,427.88x = 167,471.46 × 101,971.80
  4. Step 4: Simplify right side
    121,427.88x = 17,077,366,224.83
  5. Step 5: Solve for x
    x = 17,077,366,224.83/121,427.88
  6. Step 6: Final answer
    x = 140,637.93

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1.5x scale

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.