Home / 139,011,625.70-208,517,438.55-128,262,083.30

Finding the Fourth Proportional to 139,011,625.70, 208,517,438.55 and 128,262,083.30

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Solution

The fourth proportional to 139,011,625.70, 208,517,438.55 and 128,262,083.30 is: 192,393,124.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,011,625.70 : 208,517,438.55 = 128,262,083.30 : x
  2. Step 2: Convert to fraction form
    139,011,625.70/208,517,438.55 = 128,262,083.30/x
  3. Step 3: Cross multiply
    139,011,625.70x = 208,517,438.55 × 128,262,083.30
  4. Step 4: Simplify right side
    139,011,625.70x = 26,744,881,072,802,732
  5. Step 5: Solve for x
    x = 26,744,881,072,802,732/139,011,625.70
  6. Step 6: Final answer
    x = 192,393,124.95

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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.