Home / 100,521,652.85-138,725,805.30-75,698,043.74

Finding the Fourth Proportional to 100,521,652.85, 138,725,805.30 and 75,698,043.74

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Solution

The fourth proportional to 100,521,652.85, 138,725,805.30 and 75,698,043.74 is: 104,467,761.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,521,652.85 : 138,725,805.30 = 75,698,043.74 : x
  2. Step 2: Convert to fraction form
    100,521,652.85/138,725,805.30 = 75,698,043.74/x
  3. Step 3: Cross multiply
    100,521,652.85x = 138,725,805.30 × 75,698,043.74
  4. Step 4: Simplify right side
    100,521,652.85x = 10,501,272,077,466,124
  5. Step 5: Solve for x
    x = 10,501,272,077,466,124/100,521,652.85
  6. Step 6: Final answer
    x = 104,467,761.72

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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.