Home / 138,738,889.10-191,471,424.30-76,878,631.82

Finding the Fourth Proportional to 138,738,889.10, 191,471,424.30 and 76,878,631.82

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Solution

The fourth proportional to 138,738,889.10, 191,471,424.30 and 76,878,631.82 is: 106,099,026.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,738,889.10 : 191,471,424.30 = 76,878,631.82 : x
  2. Step 2: Convert to fraction form
    138,738,889.10/191,471,424.30 = 76,878,631.82/x
  3. Step 3: Cross multiply
    138,738,889.10x = 191,471,424.30 × 76,878,631.82
  4. Step 4: Simplify right side
    138,738,889.10x = 14,720,061,132,810,700
  5. Step 5: Solve for x
    x = 14,720,061,132,810,700/138,738,889.10
  6. Step 6: Final answer
    x = 106,099,026.94

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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.