Home / 128,241.36-176,972.40-71,652.24

Finding the Fourth Proportional to 128,241.36, 176,972.40 and 71,652.24

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Solution

The fourth proportional to 128,241.36, 176,972.40 and 71,652.24 is: 98,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,241.36 : 176,972.40 = 71,652.24 : x
  2. Step 2: Convert to fraction form
    128,241.36/176,972.40 = 71,652.24/x
  3. Step 3: Cross multiply
    128,241.36x = 176,972.40 × 71,652.24
  4. Step 4: Simplify right side
    128,241.36x = 12,680,468,878.18
  5. Step 5: Solve for x
    x = 12,680,468,878.18/128,241.36
  6. Step 6: Final answer
    x = 98,879.71

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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.