Home / 143,765.40-215,450.82-91,080.12

Finding the Fourth Proportional to 143,765.40, 215,450.82 and 91,080.12

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Solution

The fourth proportional to 143,765.40, 215,450.82 and 91,080.12 is: 136,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,765.40 : 215,450.82 = 91,080.12 : x
  2. Step 2: Convert to fraction form
    143,765.40/215,450.82 = 91,080.12/x
  3. Step 3: Cross multiply
    143,765.40x = 215,450.82 × 91,080.12
  4. Step 4: Simplify right side
    143,765.40x = 19,623,286,539.70
  5. Step 5: Solve for x
    x = 19,623,286,539.70/143,765.40
  6. Step 6: Final answer
    x = 136,495.20

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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.