Home / 139,615,209.21-192,666,638.11-76,897,147.65

Finding the Fourth Proportional to 139,615,209.21, 192,666,638.11 and 76,897,147.65

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Solution

The fourth proportional to 139,615,209.21, 192,666,638.11 and 76,897,147.65 is: 106,116,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,615,209.21 : 192,666,638.11 = 76,897,147.65 : x
  2. Step 2: Convert to fraction form
    139,615,209.21/192,666,638.11 = 76,897,147.65/x
  3. Step 3: Cross multiply
    139,615,209.21x = 192,666,638.11 × 76,897,147.65
  4. Step 4: Simplify right side
    139,615,209.21x = 14,815,514,917,973,790
  5. Step 5: Solve for x
    x = 14,815,514,917,973,790/139,615,209.21
  6. Step 6: Final answer
    x = 106,116,769.10

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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.