Home / 145,787.20-218,097.60-126,282.40

Finding the Fourth Proportional to 145,787.20, 218,097.60 and 126,282.40

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Solution

The fourth proportional to 145,787.20, 218,097.60 and 126,282.40 is: 188,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,787.20 : 218,097.60 = 126,282.40 : x
  2. Step 2: Convert to fraction form
    145,787.20/218,097.60 = 126,282.40/x
  3. Step 3: Cross multiply
    145,787.20x = 218,097.60 × 126,282.40
  4. Step 4: Simplify right side
    145,787.20x = 27,541,888,362.24
  5. Step 5: Solve for x
    x = 27,541,888,362.24/145,787.20
  6. Step 6: Final answer
    x = 188,918.43

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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.