Home / 109,938.91-151,719.42-64,616.25

Finding the Fourth Proportional to 109,938.91, 151,719.42 and 64,616.25

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Solution

The fourth proportional to 109,938.91, 151,719.42 and 64,616.25 is: 89,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,938.91 : 151,719.42 = 64,616.25 : x
  2. Step 2: Convert to fraction form
    109,938.91/151,719.42 = 64,616.25/x
  3. Step 3: Cross multiply
    109,938.91x = 151,719.42 × 64,616.25
  4. Step 4: Simplify right side
    109,938.91x = 9,803,539,972.58
  5. Step 5: Solve for x
    x = 9,803,539,972.58/109,938.91
  6. Step 6: Final answer
    x = 89,172.61

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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.