Home / 138,105,261.90-190,571,692.68-76,221,614.70

Finding the Fourth Proportional to 138,105,261.90, 190,571,692.68 and 76,221,614.70

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Solution

The fourth proportional to 138,105,261.90, 190,571,692.68 and 76,221,614.70 is: 105,178,339.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,105,261.90 : 190,571,692.68 = 76,221,614.70 : x
  2. Step 2: Convert to fraction form
    138,105,261.90/190,571,692.68 = 76,221,614.70/x
  3. Step 3: Cross multiply
    138,105,261.90x = 190,571,692.68 × 76,221,614.70
  4. Step 4: Simplify right side
    138,105,261.90x = 14,525,682,132,181,772
  5. Step 5: Solve for x
    x = 14,525,682,132,181,772/138,105,261.90
  6. Step 6: Final answer
    x = 105,178,339.57

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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.