Home / 137,614,321.80-189,880,235.46-78,895,405.80

Finding the Fourth Proportional to 137,614,321.80, 189,880,235.46 and 78,895,405.80

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Solution

The fourth proportional to 137,614,321.80, 189,880,235.46 and 78,895,405.80 is: 108,859,877.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,614,321.80 : 189,880,235.46 = 78,895,405.80 : x
  2. Step 2: Convert to fraction form
    137,614,321.80/189,880,235.46 = 78,895,405.80/x
  3. Step 3: Cross multiply
    137,614,321.80x = 189,880,235.46 × 78,895,405.80
  4. Step 4: Simplify right side
    137,614,321.80x = 14,980,678,230,016,250
  5. Step 5: Solve for x
    x = 14,980,678,230,016,250/137,614,321.80
  6. Step 6: Final answer
    x = 108,859,877.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.