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Finding the Fourth Proportional to 160,105.11, 220,946.69 and 87,510.07

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Solution

The fourth proportional to 160,105.11, 220,946.69 and 87,510.07 is: 120,764.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,105.11 : 220,946.69 = 87,510.07 : x
  2. Step 2: Convert to fraction form
    160,105.11/220,946.69 = 87,510.07/x
  3. Step 3: Cross multiply
    160,105.11x = 220,946.69 × 87,510.07
  4. Step 4: Simplify right side
    160,105.11x = 19,335,060,310.88
  5. Step 5: Solve for x
    x = 19,335,060,310.88/160,105.11
  6. Step 6: Final answer
    x = 120,764.79

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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.