Home / 143,740.40-215,999.40-126,633.20

Finding the Fourth Proportional to 143,740.40, 215,999.40 and 126,633.20

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Solution

The fourth proportional to 143,740.40, 215,999.40 and 126,633.20 is: 190,292.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,740.40 : 215,999.40 = 126,633.20 : x
  2. Step 2: Convert to fraction form
    143,740.40/215,999.40 = 126,633.20/x
  3. Step 3: Cross multiply
    143,740.40x = 215,999.40 × 126,633.20
  4. Step 4: Simplify right side
    143,740.40x = 27,352,695,220.08
  5. Step 5: Solve for x
    x = 27,352,695,220.08/143,740.40
  6. Step 6: Final answer
    x = 190,292.33

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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.