Home / 137,678,429.40-206,517,644.10-76,456,426.20

Finding the Fourth Proportional to 137,678,429.40, 206,517,644.10 and 76,456,426.20

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Solution

The fourth proportional to 137,678,429.40, 206,517,644.10 and 76,456,426.20 is: 114,684,639.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,678,429.40 : 206,517,644.10 = 76,456,426.20 : x
  2. Step 2: Convert to fraction form
    137,678,429.40/206,517,644.10 = 76,456,426.20/x
  3. Step 3: Cross multiply
    137,678,429.40x = 206,517,644.10 × 76,456,426.20
  4. Step 4: Simplify right side
    137,678,429.40x = 15,789,601,015,129,516
  5. Step 5: Solve for x
    x = 15,789,601,015,129,516/137,678,429.40
  6. Step 6: Final answer
    x = 114,684,639.30

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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.