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Finding the Fourth Proportional to 160,012.68, 220,817.60 and 87,416.56

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Solution

The fourth proportional to 160,012.68, 220,817.60 and 87,416.56 is: 120,634.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,012.68 : 220,817.60 = 87,416.56 : x
  2. Step 2: Convert to fraction form
    160,012.68/220,817.60 = 87,416.56/x
  3. Step 3: Cross multiply
    160,012.68x = 220,817.60 × 87,416.56
  4. Step 4: Simplify right side
    160,012.68x = 19,303,114,979.46
  5. Step 5: Solve for x
    x = 19,303,114,979.46/160,012.68
  6. Step 6: Final answer
    x = 120,634.91

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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.