Home / 138,809,983.20-191,557,794.96-76,934,316.48

Finding the Fourth Proportional to 138,809,983.20, 191,557,794.96 and 76,934,316.48

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Solution

The fourth proportional to 138,809,983.20, 191,557,794.96 and 76,934,316.48 is: 106,169,366.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,809,983.20 : 191,557,794.96 = 76,934,316.48 : x
  2. Step 2: Convert to fraction form
    138,809,983.20/191,557,794.96 = 76,934,316.48/x
  3. Step 3: Cross multiply
    138,809,983.20x = 191,557,794.96 × 76,934,316.48
  4. Step 4: Simplify right side
    138,809,983.20x = 14,737,368,021,663,590
  5. Step 5: Solve for x
    x = 14,737,368,021,663,590/138,809,983.20
  6. Step 6: Final answer
    x = 106,169,366.80

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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.