Home / 138,738,884.10-191,471,417.40-76,878,626.82

Finding the Fourth Proportional to 138,738,884.10, 191,471,417.40 and 76,878,626.82

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Solution

The fourth proportional to 138,738,884.10, 191,471,417.40 and 76,878,626.82 is: 106,099,020.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,738,884.10 : 191,471,417.40 = 76,878,626.82 : x
  2. Step 2: Convert to fraction form
    138,738,884.10/191,471,417.40 = 76,878,626.82/x
  3. Step 3: Cross multiply
    138,738,884.10x = 191,471,417.40 × 76,878,626.82
  4. Step 4: Simplify right side
    138,738,884.10x = 14,720,059,644,991,054
  5. Step 5: Solve for x
    x = 14,720,059,644,991,054/138,738,884.10
  6. Step 6: Final answer
    x = 106,099,020.04

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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.