Home / 139,169,678.78-192,042,956.58-80,436,148.06

Finding the Fourth Proportional to 139,169,678.78, 192,042,956.58 and 80,436,148.06

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Solution

The fourth proportional to 139,169,678.78, 192,042,956.58 and 80,436,148.06 is: 110,995,410.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,169,678.78 : 192,042,956.58 = 80,436,148.06 : x
  2. Step 2: Convert to fraction form
    139,169,678.78/192,042,956.58 = 80,436,148.06/x
  3. Step 3: Cross multiply
    139,169,678.78x = 192,042,956.58 × 80,436,148.06
  4. Step 4: Simplify right side
    139,169,678.78x = 15,447,195,689,349,032
  5. Step 5: Solve for x
    x = 15,447,195,689,349,032/139,169,678.78
  6. Step 6: Final answer
    x = 110,995,410.96

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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.