Home / 121,313.43-167,410.29-66,123.23

Finding the Fourth Proportional to 121,313.43, 167,410.29 and 66,123.23

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Solution

The fourth proportional to 121,313.43, 167,410.29 and 66,123.23 is: 91,248.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,313.43 : 167,410.29 = 66,123.23 : x
  2. Step 2: Convert to fraction form
    121,313.43/167,410.29 = 66,123.23/x
  3. Step 3: Cross multiply
    121,313.43x = 167,410.29 × 66,123.23
  4. Step 4: Simplify right side
    121,313.43x = 11,069,708,272.99
  5. Step 5: Solve for x
    x = 11,069,708,272.99/121,313.43
  6. Step 6: Final answer
    x = 91,248.83

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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.