Home / 139,615,222.12-192,666,655.92-76,897,160.56

Finding the Fourth Proportional to 139,615,222.12, 192,666,655.92 and 76,897,160.56

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Solution

The fourth proportional to 139,615,222.12, 192,666,655.92 and 76,897,160.56 is: 106,116,786.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,615,222.12 : 192,666,655.92 = 76,897,160.56 : x
  2. Step 2: Convert to fraction form
    139,615,222.12/192,666,655.92 = 76,897,160.56/x
  3. Step 3: Cross multiply
    139,615,222.12x = 192,666,655.92 × 76,897,160.56
  4. Step 4: Simplify right side
    139,615,222.12x = 14,815,518,774,838,514
  5. Step 5: Solve for x
    x = 14,815,518,774,838,514/139,615,222.12
  6. Step 6: Final answer
    x = 106,116,786.91

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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.