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Finding the Fourth Proportional to 120,232.92, 165,987.60 and 90,007.32

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Solution

The fourth proportional to 120,232.92, 165,987.60 and 90,007.32 is: 124,259.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,232.92 : 165,987.60 = 90,007.32 : x
  2. Step 2: Convert to fraction form
    120,232.92/165,987.60 = 90,007.32/x
  3. Step 3: Cross multiply
    120,232.92x = 165,987.60 × 90,007.32
  4. Step 4: Simplify right side
    120,232.92x = 14,940,099,029.23
  5. Step 5: Solve for x
    x = 14,940,099,029.23/120,232.92
  6. Step 6: Final answer
    x = 124,259.64

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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.