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Finding the Fourth Proportional to 121,501.85, 167,672.30 and 67,783.66

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Solution

The fourth proportional to 121,501.85, 167,672.30 and 67,783.66 is: 93,541.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,501.85 : 167,672.30 = 67,783.66 : x
  2. Step 2: Convert to fraction form
    121,501.85/167,672.30 = 67,783.66/x
  3. Step 3: Cross multiply
    121,501.85x = 167,672.30 × 67,783.66
  4. Step 4: Simplify right side
    121,501.85x = 11,365,442,174.62
  5. Step 5: Solve for x
    x = 11,365,442,174.62/121,501.85
  6. Step 6: Final answer
    x = 93,541.31

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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.