Home / 113,385,911.30-156,389,018.30-85,509,796.28

Finding the Fourth Proportional to 113,385,911.30, 156,389,018.30 and 85,509,796.28

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Solution

The fourth proportional to 113,385,911.30, 156,389,018.30 and 85,509,796.28 is: 117,940,517.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,385,911.30 : 156,389,018.30 = 85,509,796.28 : x
  2. Step 2: Convert to fraction form
    113,385,911.30/156,389,018.30 = 85,509,796.28/x
  3. Step 3: Cross multiply
    113,385,911.30x = 156,389,018.30 × 85,509,796.28
  4. Step 4: Simplify right side
    113,385,911.30x = 13,372,793,095,262,194
  5. Step 5: Solve for x
    x = 13,372,793,095,262,194/113,385,911.30
  6. Step 6: Final answer
    x = 117,940,517.85

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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.