Home / 158,961.10-219,365.64-87,340.90

Finding the Fourth Proportional to 158,961.10, 219,365.64 and 87,340.90

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Solution

The fourth proportional to 158,961.10, 219,365.64 and 87,340.90 is: 120,530.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,961.10 : 219,365.64 = 87,340.90 : x
  2. Step 2: Convert to fraction form
    158,961.10/219,365.64 = 87,340.90/x
  3. Step 3: Cross multiply
    158,961.10x = 219,365.64 × 87,340.90
  4. Step 4: Simplify right side
    158,961.10x = 19,159,592,426.68
  5. Step 5: Solve for x
    x = 19,159,592,426.68/158,961.10
  6. Step 6: Final answer
    x = 120,530.07

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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.