Home / 139,615,221.12-192,666,654.54-76,897,159.56

Finding the Fourth Proportional to 139,615,221.12, 192,666,654.54 and 76,897,159.56

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Solution

The fourth proportional to 139,615,221.12, 192,666,654.54 and 76,897,159.56 is: 106,116,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,615,221.12 : 192,666,654.54 = 76,897,159.56 : x
  2. Step 2: Convert to fraction form
    139,615,221.12/192,666,654.54 = 76,897,159.56/x
  3. Step 3: Cross multiply
    139,615,221.12x = 192,666,654.54 × 76,897,159.56
  4. Step 4: Simplify right side
    139,615,221.12x = 14,815,518,476,053,778
  5. Step 5: Solve for x
    x = 14,815,518,476,053,778/139,615,221.12
  6. Step 6: Final answer
    x = 106,116,785.53

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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.