Home / 138,629,403.89-191,307,875.67-75,904,362.20

Finding the Fourth Proportional to 138,629,403.89, 191,307,875.67 and 75,904,362.20

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Solution

The fourth proportional to 138,629,403.89, 191,307,875.67 and 75,904,362.20 is: 104,747,635.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,629,403.89 : 191,307,875.67 = 75,904,362.20 : x
  2. Step 2: Convert to fraction form
    138,629,403.89/191,307,875.67 = 75,904,362.20/x
  3. Step 3: Cross multiply
    138,629,403.89x = 191,307,875.67 × 75,904,362.20
  4. Step 4: Simplify right side
    138,629,403.89x = 14,521,102,286,568,248
  5. Step 5: Solve for x
    x = 14,521,102,286,568,248/138,629,403.89
  6. Step 6: Final answer
    x = 104,747,635.63

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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.