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Finding the Fourth Proportional to 159,588.58, 220,232.04 and 87,969.80

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Solution

The fourth proportional to 159,588.58, 220,232.04 and 87,969.80 is: 121,398.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,588.58 : 220,232.04 = 87,969.80 : x
  2. Step 2: Convert to fraction form
    159,588.58/220,232.04 = 87,969.80/x
  3. Step 3: Cross multiply
    159,588.58x = 220,232.04 × 87,969.80
  4. Step 4: Simplify right side
    159,588.58x = 19,373,767,741.70
  5. Step 5: Solve for x
    x = 19,373,767,741.70/159,588.58
  6. Step 6: Final answer
    x = 121,398.21

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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.