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Finding the Fourth Proportional to 159,588.54, 220,232.13 and 87,969.76

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Solution

The fourth proportional to 159,588.54, 220,232.13 and 87,969.76 is: 121,398.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,588.54 : 220,232.13 = 87,969.76 : x
  2. Step 2: Convert to fraction form
    159,588.54/220,232.13 = 87,969.76/x
  3. Step 3: Cross multiply
    159,588.54x = 220,232.13 × 87,969.76
  4. Step 4: Simplify right side
    159,588.54x = 19,373,767,069.81
  5. Step 5: Solve for x
    x = 19,373,767,069.81/159,588.54
  6. Step 6: Final answer
    x = 121,398.23

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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.