Home / 159,209.38-219,701.01-87,587.56

Finding the Fourth Proportional to 159,209.38, 219,701.01 and 87,587.56

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Solution

The fourth proportional to 159,209.38, 219,701.01 and 87,587.56 is: 120,866.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,209.38 : 219,701.01 = 87,587.56 : x
  2. Step 2: Convert to fraction form
    159,209.38/219,701.01 = 87,587.56/x
  3. Step 3: Cross multiply
    159,209.38x = 219,701.01 × 87,587.56
  4. Step 4: Simplify right side
    159,209.38x = 19,243,075,505.84
  5. Step 5: Solve for x
    x = 19,243,075,505.84/159,209.38
  6. Step 6: Final answer
    x = 120,866.47

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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.