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Finding the Fourth Proportional to 150,642.78, 207,893.55 and 90,223.26

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Solution

The fourth proportional to 150,642.78, 207,893.55 and 90,223.26 is: 124,512.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,642.78 : 207,893.55 = 90,223.26 : x
  2. Step 2: Convert to fraction form
    150,642.78/207,893.55 = 90,223.26/x
  3. Step 3: Cross multiply
    150,642.78x = 207,893.55 × 90,223.26
  4. Step 4: Simplify right side
    150,642.78x = 18,756,833,813.97
  5. Step 5: Solve for x
    x = 18,756,833,813.97/150,642.78
  6. Step 6: Final answer
    x = 124,512.00

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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.