Home / 139,163,136.21-192,039,866.70-77,287,460.58

Finding the Fourth Proportional to 139,163,136.21, 192,039,866.70 and 77,287,460.58

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Solution

The fourth proportional to 139,163,136.21, 192,039,866.70 and 77,287,460.58 is: 106,653,773.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163,136.21 : 192,039,866.70 = 77,287,460.58 : x
  2. Step 2: Convert to fraction form
    139,163,136.21/192,039,866.70 = 77,287,460.58/x
  3. Step 3: Cross multiply
    139,163,136.21x = 192,039,866.70 × 77,287,460.58
  4. Step 4: Simplify right side
    139,163,136.21x = 14,842,273,627,510,006
  5. Step 5: Solve for x
    x = 14,842,273,627,510,006/139,163,136.21
  6. Step 6: Final answer
    x = 106,653,773.63

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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.