Home / 155,345.28-214,309.20-97,939.36

Finding the Fourth Proportional to 155,345.28, 214,309.20 and 97,939.36

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Solution

The fourth proportional to 155,345.28, 214,309.20 and 97,939.36 is: 135,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,345.28 : 214,309.20 = 97,939.36 : x
  2. Step 2: Convert to fraction form
    155,345.28/214,309.20 = 97,939.36/x
  3. Step 3: Cross multiply
    155,345.28x = 214,309.20 × 97,939.36
  4. Step 4: Simplify right side
    155,345.28x = 20,989,305,890.11
  5. Step 5: Solve for x
    x = 20,989,305,890.11/155,345.28
  6. Step 6: Final answer
    x = 135,113.90

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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.