Home / 139,011,624.20-208,517,436.30-128,262,081.80

Finding the Fourth Proportional to 139,011,624.20, 208,517,436.30 and 128,262,081.80

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Solution

The fourth proportional to 139,011,624.20, 208,517,436.30 and 128,262,081.80 is: 192,393,122.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,011,624.20 : 208,517,436.30 = 128,262,081.80 : x
  2. Step 2: Convert to fraction form
    139,011,624.20/208,517,436.30 = 128,262,081.80/x
  3. Step 3: Cross multiply
    139,011,624.20x = 208,517,436.30 × 128,262,081.80
  4. Step 4: Simplify right side
    139,011,624.20x = 26,744,880,471,436,892
  5. Step 5: Solve for x
    x = 26,744,880,471,436,892/139,011,624.20
  6. Step 6: Final answer
    x = 192,393,122.70

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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.