Home / 138,149,943.05-190,732,960.44-87,942,490.50

Finding the Fourth Proportional to 138,149,943.05, 190,732,960.44 and 87,942,490.50

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Solution

The fourth proportional to 138,149,943.05, 190,732,960.44 and 87,942,490.50 is: 121,415,407.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,149,943.05 : 190,732,960.44 = 87,942,490.50 : x
  2. Step 2: Convert to fraction form
    138,149,943.05/190,732,960.44 = 87,942,490.50/x
  3. Step 3: Cross multiply
    138,149,943.05x = 190,732,960.44 × 87,942,490.50
  4. Step 4: Simplify right side
    138,149,943.05x = 16,773,531,561,531,576
  5. Step 5: Solve for x
    x = 16,773,531,561,531,576/138,149,943.05
  6. Step 6: Final answer
    x = 121,415,407.00

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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.