Home / 121,772.51-168,038.83-67,321.42

Finding the Fourth Proportional to 121,772.51, 168,038.83 and 67,321.42

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Solution

The fourth proportional to 121,772.51, 168,038.83 and 67,321.42 is: 92,899.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,772.51 : 168,038.83 = 67,321.42 : x
  2. Step 2: Convert to fraction form
    121,772.51/168,038.83 = 67,321.42/x
  3. Step 3: Cross multiply
    121,772.51x = 168,038.83 × 67,321.42
  4. Step 4: Simplify right side
    121,772.51x = 11,312,612,314.13
  5. Step 5: Solve for x
    x = 11,312,612,314.13/121,772.51
  6. Step 6: Final answer
    x = 92,899.56

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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.