Home / 199,931.76-275,905.78-109,288.08

Finding the Fourth Proportional to 199,931.76, 275,905.78 and 109,288.08

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Solution

The fourth proportional to 199,931.76, 275,905.78 and 109,288.08 is: 150,817.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,931.76 : 275,905.78 = 109,288.08 : x
  2. Step 2: Convert to fraction form
    199,931.76/275,905.78 = 109,288.08/x
  3. Step 3: Cross multiply
    199,931.76x = 275,905.78 × 109,288.08
  4. Step 4: Simplify right side
    199,931.76x = 30,153,212,957.10
  5. Step 5: Solve for x
    x = 30,153,212,957.10/199,931.76
  6. Step 6: Final answer
    x = 150,817.52

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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.