Home / 138,482,094.79-191,086,570.77-78,951,070.37

Finding the Fourth Proportional to 138,482,094.79, 191,086,570.77 and 78,951,070.37

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Solution

The fourth proportional to 138,482,094.79, 191,086,570.77 and 78,951,070.37 is: 108,941,804.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,482,094.79 : 191,086,570.77 = 78,951,070.37 : x
  2. Step 2: Convert to fraction form
    138,482,094.79/191,086,570.77 = 78,951,070.37/x
  3. Step 3: Cross multiply
    138,482,094.79x = 191,086,570.77 × 78,951,070.37
  4. Step 4: Simplify right side
    138,482,094.79x = 15,086,489,295,805,906
  5. Step 5: Solve for x
    x = 15,086,489,295,805,906/138,482,094.79
  6. Step 6: Final answer
    x = 108,941,804.49

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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.