Home / 142,787.80-213,992.70-76,084.30

Finding the Fourth Proportional to 142,787.80, 213,992.70 and 76,084.30

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Solution

The fourth proportional to 142,787.80, 213,992.70 and 76,084.30 is: 114,025.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,787.80 : 213,992.70 = 76,084.30 : x
  2. Step 2: Convert to fraction form
    142,787.80/213,992.70 = 76,084.30/x
  3. Step 3: Cross multiply
    142,787.80x = 213,992.70 × 76,084.30
  4. Step 4: Simplify right side
    142,787.80x = 16,281,484,784.61
  5. Step 5: Solve for x
    x = 16,281,484,784.61/142,787.80
  6. Step 6: Final answer
    x = 114,025.74

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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.