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Finding the Fourth Proportional to 159,754.21, 220,460.55 and 87,157.10

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Solution

The fourth proportional to 159,754.21, 220,460.55 and 87,157.10 is: 120,276.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,754.21 : 220,460.55 = 87,157.10 : x
  2. Step 2: Convert to fraction form
    159,754.21/220,460.55 = 87,157.10/x
  3. Step 3: Cross multiply
    159,754.21x = 220,460.55 × 87,157.10
  4. Step 4: Simplify right side
    159,754.21x = 19,214,702,202.41
  5. Step 5: Solve for x
    x = 19,214,702,202.41/159,754.21
  6. Step 6: Final answer
    x = 120,276.66

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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.