Home / 158,719.10-219,035.95-87,103.65

Finding the Fourth Proportional to 158,719.10, 219,035.95 and 87,103.65

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Solution

The fourth proportional to 158,719.10, 219,035.95 and 87,103.65 is: 120,205.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,719.10 : 219,035.95 = 87,103.65 : x
  2. Step 2: Convert to fraction form
    158,719.10/219,035.95 = 87,103.65/x
  3. Step 3: Cross multiply
    158,719.10x = 219,035.95 × 87,103.65
  4. Step 4: Simplify right side
    158,719.10x = 19,078,831,329.84
  5. Step 5: Solve for x
    x = 19,078,831,329.84/158,719.10
  6. Step 6: Final answer
    x = 120,205.02

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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.