Home / 159,327.81-219,878.64-87,714.50

Finding the Fourth Proportional to 159,327.81, 219,878.64 and 87,714.50

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Solution

The fourth proportional to 159,327.81, 219,878.64 and 87,714.50 is: 121,049.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,327.81 : 219,878.64 = 87,714.50 : x
  2. Step 2: Convert to fraction form
    159,327.81/219,878.64 = 87,714.50/x
  3. Step 3: Cross multiply
    159,327.81x = 219,878.64 × 87,714.50
  4. Step 4: Simplify right side
    159,327.81x = 19,286,543,868.89
  5. Step 5: Solve for x
    x = 19,286,543,868.89/159,327.81
  6. Step 6: Final answer
    x = 121,049.45

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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.