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Finding the Fourth Proportional to 235,533.75, 325,027.20 and 128,103.87

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Solution

The fourth proportional to 235,533.75, 325,027.20 and 128,103.87 is: 176,778.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,533.75 : 325,027.20 = 128,103.87 : x
  2. Step 2: Convert to fraction form
    235,533.75/325,027.20 = 128,103.87/x
  3. Step 3: Cross multiply
    235,533.75x = 325,027.20 × 128,103.87
  4. Step 4: Simplify right side
    235,533.75x = 41,637,242,175.26
  5. Step 5: Solve for x
    x = 41,637,242,175.26/235,533.75
  6. Step 6: Final answer
    x = 176,778.24

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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.