Home / 149,105,006.82-205,762,948.11-82,122,678.90

Finding the Fourth Proportional to 149,105,006.82, 205,762,948.11 and 82,122,678.90

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Solution

The fourth proportional to 149,105,006.82, 205,762,948.11 and 82,122,678.90 is: 113,328,216.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,105,006.82 : 205,762,948.11 = 82,122,678.90 : x
  2. Step 2: Convert to fraction form
    149,105,006.82/205,762,948.11 = 82,122,678.90/x
  3. Step 3: Cross multiply
    149,105,006.82x = 205,762,948.11 × 82,122,678.90
  4. Step 4: Simplify right side
    149,105,006.82x = 16,897,804,517,154,894
  5. Step 5: Solve for x
    x = 16,897,804,517,154,894/149,105,006.82
  6. Step 6: Final answer
    x = 113,328,216.65

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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.