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Finding the Fourth Proportional to 159,199.66, 219,686.86 and 87,568.12

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Solution

The fourth proportional to 159,199.66, 219,686.86 and 87,568.12 is: 120,839.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,199.66 : 219,686.86 = 87,568.12 : x
  2. Step 2: Convert to fraction form
    159,199.66/219,686.86 = 87,568.12/x
  3. Step 3: Cross multiply
    159,199.66x = 219,686.86 × 87,568.12
  4. Step 4: Simplify right side
    159,199.66x = 19,237,565,318.90
  5. Step 5: Solve for x
    x = 19,237,565,318.90/159,199.66
  6. Step 6: Final answer
    x = 120,839.24

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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.