Home / 121,471.40-167,708.58-76,211.48

Finding the Fourth Proportional to 121,471.40, 167,708.58 and 76,211.48

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Solution

The fourth proportional to 121,471.40, 167,708.58 and 76,211.48 is: 105,220.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,471.40 : 167,708.58 = 76,211.48 : x
  2. Step 2: Convert to fraction form
    121,471.40/167,708.58 = 76,211.48/x
  3. Step 3: Cross multiply
    121,471.40x = 167,708.58 × 76,211.48
  4. Step 4: Simplify right side
    121,471.40x = 12,781,319,090.50
  5. Step 5: Solve for x
    x = 12,781,319,090.50/121,471.40
  6. Step 6: Final answer
    x = 105,220.81

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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.