Home / 138,340,307.88-190,909,463.09-75,616,817.78

Finding the Fourth Proportional to 138,340,307.88, 190,909,463.09 and 75,616,817.78

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Solution

The fourth proportional to 138,340,307.88, 190,909,463.09 and 75,616,817.78 is: 104,351,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,340,307.88 : 190,909,463.09 = 75,616,817.78 : x
  2. Step 2: Convert to fraction form
    138,340,307.88/190,909,463.09 = 75,616,817.78/x
  3. Step 3: Cross multiply
    138,340,307.88x = 190,909,463.09 × 75,616,817.78
  4. Step 4: Simplify right side
    138,340,307.88x = 14,435,966,081,621,536
  5. Step 5: Solve for x
    x = 14,435,966,081,621,536/138,340,307.88
  6. Step 6: Final answer
    x = 104,351,120.10

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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.