Home / 138,738,892.35-191,471,428.79-76,878,635.07

Finding the Fourth Proportional to 138,738,892.35, 191,471,428.79 and 76,878,635.07

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Solution

The fourth proportional to 138,738,892.35, 191,471,428.79 and 76,878,635.07 is: 106,099,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,738,892.35 : 191,471,428.79 = 76,878,635.07 : x
  2. Step 2: Convert to fraction form
    138,738,892.35/191,471,428.79 = 76,878,635.07/x
  3. Step 3: Cross multiply
    138,738,892.35x = 191,471,428.79 × 76,878,635.07
  4. Step 4: Simplify right side
    138,738,892.35x = 14,720,062,099,893,506
  5. Step 5: Solve for x
    x = 14,720,062,099,893,506/138,738,892.35
  6. Step 6: Final answer
    x = 106,099,031.43

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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.