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Finding the Fourth Proportional to 159,606.80, 220,247.88 and 87,989.84

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Solution

The fourth proportional to 159,606.80, 220,247.88 and 87,989.84 is: 121,420.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,606.80 : 220,247.88 = 87,989.84 : x
  2. Step 2: Convert to fraction form
    159,606.80/220,247.88 = 87,989.84/x
  3. Step 3: Cross multiply
    159,606.80x = 220,247.88 × 87,989.84
  4. Step 4: Simplify right side
    159,606.80x = 19,379,575,721.54
  5. Step 5: Solve for x
    x = 19,379,575,721.54/159,606.80
  6. Step 6: Final answer
    x = 121,420.74

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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.