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Finding the Fourth Proportional to 157,808.20, 236,129.10 and 143,811.40

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Solution

The fourth proportional to 157,808.20, 236,129.10 and 143,811.40 is: 215,185.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,808.20 : 236,129.10 = 143,811.40 : x
  2. Step 2: Convert to fraction form
    157,808.20/236,129.10 = 143,811.40/x
  3. Step 3: Cross multiply
    157,808.20x = 236,129.10 × 143,811.40
  4. Step 4: Simplify right side
    157,808.20x = 33,958,056,451.74
  5. Step 5: Solve for x
    x = 33,958,056,451.74/157,808.20
  6. Step 6: Final answer
    x = 215,185.63

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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.