Home / 109,939.18-151,719.74-64,616.52

Finding the Fourth Proportional to 109,939.18, 151,719.74 and 64,616.52

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Solution

The fourth proportional to 109,939.18, 151,719.74 and 64,616.52 is: 89,172.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,939.18 : 151,719.74 = 64,616.52 : x
  2. Step 2: Convert to fraction form
    109,939.18/151,719.74 = 64,616.52/x
  3. Step 3: Cross multiply
    109,939.18x = 151,719.74 × 64,616.52
  4. Step 4: Simplify right side
    109,939.18x = 9,803,601,614.10
  5. Step 5: Solve for x
    x = 9,803,601,614.10/109,939.18
  6. Step 6: Final answer
    x = 89,172.96

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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.