Home / 143,996.40-215,994.60-91,465.20

Finding the Fourth Proportional to 143,996.40, 215,994.60 and 91,465.20

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Solution

The fourth proportional to 143,996.40, 215,994.60 and 91,465.20 is: 137,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,996.40 : 215,994.60 = 91,465.20 : x
  2. Step 2: Convert to fraction form
    143,996.40/215,994.60 = 91,465.20/x
  3. Step 3: Cross multiply
    143,996.40x = 215,994.60 × 91,465.20
  4. Step 4: Simplify right side
    143,996.40x = 19,755,989,287.92
  5. Step 5: Solve for x
    x = 19,755,989,287.92/143,996.40
  6. Step 6: Final answer
    x = 137,197.80

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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.