Home / 138,809,987.70-191,557,801.17-76,934,320.98

Finding the Fourth Proportional to 138,809,987.70, 191,557,801.17 and 76,934,320.98

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Solution

The fourth proportional to 138,809,987.70, 191,557,801.17 and 76,934,320.98 is: 106,169,373.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,809,987.70 : 191,557,801.17 = 76,934,320.98 : x
  2. Step 2: Convert to fraction form
    138,809,987.70/191,557,801.17 = 76,934,320.98/x
  3. Step 3: Cross multiply
    138,809,987.70x = 191,557,801.17 × 76,934,320.98
  4. Step 4: Simplify right side
    138,809,987.70x = 14,737,369,361,435,800
  5. Step 5: Solve for x
    x = 14,737,369,361,435,800/138,809,987.70
  6. Step 6: Final answer
    x = 106,169,373.01

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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.