Home / 138,681,112.17-191,071,784.32-91,554,252.90

Finding the Fourth Proportional to 138,681,112.17, 191,071,784.32 and 91,554,252.90

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Solution

The fourth proportional to 138,681,112.17, 191,071,784.32 and 91,554,252.90 is: 126,141,434.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,681,112.17 : 191,071,784.32 = 91,554,252.90 : x
  2. Step 2: Convert to fraction form
    138,681,112.17/191,071,784.32 = 91,554,252.90/x
  3. Step 3: Cross multiply
    138,681,112.17x = 191,071,784.32 × 91,554,252.90
  4. Step 4: Simplify right side
    138,681,112.17x = 17,493,434,463,687,536
  5. Step 5: Solve for x
    x = 17,493,434,463,687,536/138,681,112.17
  6. Step 6: Final answer
    x = 126,141,434.76

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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.