Home / 203,022.69-280,173.78-112,387.02

Finding the Fourth Proportional to 203,022.69, 280,173.78 and 112,387.02

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Solution

The fourth proportional to 203,022.69, 280,173.78 and 112,387.02 is: 155,095.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,022.69 : 280,173.78 = 112,387.02 : x
  2. Step 2: Convert to fraction form
    203,022.69/280,173.78 = 112,387.02/x
  3. Step 3: Cross multiply
    203,022.69x = 280,173.78 × 112,387.02
  4. Step 4: Simplify right side
    203,022.69x = 31,487,896,216.34
  5. Step 5: Solve for x
    x = 31,487,896,216.34/203,022.69
  6. Step 6: Final answer
    x = 155,095.45

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1.5x scale

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.