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Finding the Fourth Proportional to 143,744.60, 215,228.10 and 112,640.60

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Solution

The fourth proportional to 143,744.60, 215,228.10 and 112,640.60 is: 168,656.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,744.60 : 215,228.10 = 112,640.60 : x
  2. Step 2: Convert to fraction form
    143,744.60/215,228.10 = 112,640.60/x
  3. Step 3: Cross multiply
    143,744.60x = 215,228.10 × 112,640.60
  4. Step 4: Simplify right side
    143,744.60x = 24,243,422,320.86
  5. Step 5: Solve for x
    x = 24,243,422,320.86/143,744.60
  6. Step 6: Final answer
    x = 168,656.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.