Home / 139,254,421.78-192,175,709.49-76,532,742.97

Finding the Fourth Proportional to 139,254,421.78, 192,175,709.49 and 76,532,742.97

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Solution

The fourth proportional to 139,254,421.78, 192,175,709.49 and 76,532,742.97 is: 105,617,717.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,254,421.78 : 192,175,709.49 = 76,532,742.97 : x
  2. Step 2: Convert to fraction form
    139,254,421.78/192,175,709.49 = 76,532,742.97/x
  3. Step 3: Cross multiply
    139,254,421.78x = 192,175,709.49 × 76,532,742.97
  4. Step 4: Simplify right side
    139,254,421.78x = 14,707,734,179,475,560
  5. Step 5: Solve for x
    x = 14,707,734,179,475,560/139,254,421.78
  6. Step 6: Final answer
    x = 105,617,717.49

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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.