Home / 142,188.40-213,118.55-53,385.26

Finding the Fourth Proportional to 142,188.40, 213,118.55 and 53,385.26

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Solution

The fourth proportional to 142,188.40, 213,118.55 and 53,385.26 is: 80,016.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,188.40 : 213,118.55 = 53,385.26 : x
  2. Step 2: Convert to fraction form
    142,188.40/213,118.55 = 53,385.26/x
  3. Step 3: Cross multiply
    142,188.40x = 213,118.55 × 53,385.26
  4. Step 4: Simplify right side
    142,188.40x = 11,377,389,202.57
  5. Step 5: Solve for x
    x = 11,377,389,202.57/142,188.40
  6. Step 6: Final answer
    x = 80,016.30

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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.