Home / 138,779,028-191,519,257.68-76,893,576.48

Finding the Fourth Proportional to 138,779,028, 191,519,257.68 and 76,893,576.48

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Solution

The fourth proportional to 138,779,028, 191,519,257.68 and 76,893,576.48 is: 106,115,462.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,779,028 : 191,519,257.68 = 76,893,576.48 : x
  2. Step 2: Convert to fraction form
    138,779,028/191,519,257.68 = 76,893,576.48/x
  3. Step 3: Cross multiply
    138,779,028x = 191,519,257.68 × 76,893,576.48
  4. Step 4: Simplify right side
    138,779,028x = 14,726,600,687,809,908
  5. Step 5: Solve for x
    x = 14,726,600,687,809,908/138,779,028
  6. Step 6: Final answer
    x = 106,115,462.11

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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.