Home / 142,125.20-212,928.60-115,686.80

Finding the Fourth Proportional to 142,125.20, 212,928.60 and 115,686.80

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Solution

The fourth proportional to 142,125.20, 212,928.60 and 115,686.80 is: 173,319.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,125.20 : 212,928.60 = 115,686.80 : x
  2. Step 2: Convert to fraction form
    142,125.20/212,928.60 = 115,686.80/x
  3. Step 3: Cross multiply
    142,125.20x = 212,928.60 × 115,686.80
  4. Step 4: Simplify right side
    142,125.20x = 24,633,028,362.48
  5. Step 5: Solve for x
    x = 24,633,028,362.48/142,125.20
  6. Step 6: Final answer
    x = 173,319.22

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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.