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Finding the Fourth Proportional to 147,963.40, 204,141.31 and 90,542.80

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Solution

The fourth proportional to 147,963.40, 204,141.31 and 90,542.80 is: 124,919.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,963.40 : 204,141.31 = 90,542.80 : x
  2. Step 2: Convert to fraction form
    147,963.40/204,141.31 = 90,542.80/x
  3. Step 3: Cross multiply
    147,963.40x = 204,141.31 × 90,542.80
  4. Step 4: Simplify right side
    147,963.40x = 18,483,525,803.07
  5. Step 5: Solve for x
    x = 18,483,525,803.07/147,963.40
  6. Step 6: Final answer
    x = 124,919.58

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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.