Home / 120,266,106.54-165,970,442.79-65,262,006.78

Finding the Fourth Proportional to 120,266,106.54, 165,970,442.79 and 65,262,006.78

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Solution

The fourth proportional to 120,266,106.54, 165,970,442.79 and 65,262,006.78 is: 90,063,314.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,266,106.54 : 165,970,442.79 = 65,262,006.78 : x
  2. Step 2: Convert to fraction form
    120,266,106.54/165,970,442.79 = 65,262,006.78/x
  3. Step 3: Cross multiply
    120,266,106.54x = 165,970,442.79 × 65,262,006.78
  4. Step 4: Simplify right side
    120,266,106.54x = 10,831,564,162,640,582
  5. Step 5: Solve for x
    x = 10,831,564,162,640,582/120,266,106.54
  6. Step 6: Final answer
    x = 90,063,314.38

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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.