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Finding the Fourth Proportional to 121,235.40, 167,285.25 and 67,520.25

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Solution

The fourth proportional to 121,235.40, 167,285.25 and 67,520.25 is: 93,167.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,235.40 : 167,285.25 = 67,520.25 : x
  2. Step 2: Convert to fraction form
    121,235.40/167,285.25 = 67,520.25/x
  3. Step 3: Cross multiply
    121,235.40x = 167,285.25 × 67,520.25
  4. Step 4: Simplify right side
    121,235.40x = 11,295,141,901.31
  5. Step 5: Solve for x
    x = 11,295,141,901.31/121,235.40
  6. Step 6: Final answer
    x = 93,167.03

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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.