Home / 159,865.79-220,622.13-91,904.76

Finding the Fourth Proportional to 159,865.79, 220,622.13 and 91,904.76

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Solution

The fourth proportional to 159,865.79, 220,622.13 and 91,904.76 is: 126,832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,865.79 : 220,622.13 = 91,904.76 : x
  2. Step 2: Convert to fraction form
    159,865.79/220,622.13 = 91,904.76/x
  3. Step 3: Cross multiply
    159,865.79x = 220,622.13 × 91,904.76
  4. Step 4: Simplify right side
    159,865.79x = 20,276,223,908.34
  5. Step 5: Solve for x
    x = 20,276,223,908.34/159,865.79
  6. Step 6: Final answer
    x = 126,832.79

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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.