Home / 138,900,753.57-191,685,675.72-76,172,877.85

Finding the Fourth Proportional to 138,900,753.57, 191,685,675.72 and 76,172,877.85

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Solution

The fourth proportional to 138,900,753.57, 191,685,675.72 and 76,172,877.85 is: 105,120,016.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,900,753.57 : 191,685,675.72 = 76,172,877.85 : x
  2. Step 2: Convert to fraction form
    138,900,753.57/191,685,675.72 = 76,172,877.85/x
  3. Step 3: Cross multiply
    138,900,753.57x = 191,685,675.72 × 76,172,877.85
  4. Step 4: Simplify right side
    138,900,753.57x = 14,601,249,562,381,836
  5. Step 5: Solve for x
    x = 14,601,249,562,381,836/138,900,753.57
  6. Step 6: Final answer
    x = 105,120,016.90

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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.