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Finding the Fourth Proportional to 159,015.58, 219,443.34 and 87,395.71

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Solution

The fourth proportional to 159,015.58, 219,443.34 and 87,395.71 is: 120,607.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,015.58 : 219,443.34 = 87,395.71 : x
  2. Step 2: Convert to fraction form
    159,015.58/219,443.34 = 87,395.71/x
  3. Step 3: Cross multiply
    159,015.58x = 219,443.34 × 87,395.71
  4. Step 4: Simplify right side
    159,015.58x = 19,178,406,504.07
  5. Step 5: Solve for x
    x = 19,178,406,504.07/159,015.58
  6. Step 6: Final answer
    x = 120,607.09

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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.