Home / 137,648,420.89-189,959,833.33-74,921,489.39

Finding the Fourth Proportional to 137,648,420.89, 189,959,833.33 and 74,921,489.39

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Solution

The fourth proportional to 137,648,420.89, 189,959,833.33 and 74,921,489.39 is: 103,394,383.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,648,420.89 : 189,959,833.33 = 74,921,489.39 : x
  2. Step 2: Convert to fraction form
    137,648,420.89/189,959,833.33 = 74,921,489.39/x
  3. Step 3: Cross multiply
    137,648,420.89x = 189,959,833.33 × 74,921,489.39
  4. Step 4: Simplify right side
    137,648,420.89x = 14,232,073,637,647,358
  5. Step 5: Solve for x
    x = 14,232,073,637,647,358/137,648,420.89
  6. Step 6: Final answer
    x = 103,394,383.65

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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.