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Finding the Fourth Proportional to 121,429.31, 167,573.53 and 66,983.56

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Solution

The fourth proportional to 121,429.31, 167,573.53 and 66,983.56 is: 92,437.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,429.31 : 167,573.53 = 66,983.56 : x
  2. Step 2: Convert to fraction form
    121,429.31/167,573.53 = 66,983.56/x
  3. Step 3: Cross multiply
    121,429.31x = 167,573.53 × 66,983.56
  4. Step 4: Simplify right side
    121,429.31x = 11,224,671,265.96
  5. Step 5: Solve for x
    x = 11,224,671,265.96/121,429.31
  6. Step 6: Final answer
    x = 92,437.91

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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.