Home / 113,385,907.31-156,389,012.79-85,509,792.29

Finding the Fourth Proportional to 113,385,907.31, 156,389,012.79 and 85,509,792.29

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Solution

The fourth proportional to 113,385,907.31, 156,389,012.79 and 85,509,792.29 is: 117,940,512.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,385,907.31 : 156,389,012.79 = 85,509,792.29 : x
  2. Step 2: Convert to fraction form
    113,385,907.31/156,389,012.79 = 85,509,792.29/x
  3. Step 3: Cross multiply
    113,385,907.31x = 156,389,012.79 × 85,509,792.29
  4. Step 4: Simplify right side
    113,385,907.31x = 13,372,791,999,329,108
  5. Step 5: Solve for x
    x = 13,372,791,999,329,108/113,385,907.31
  6. Step 6: Final answer
    x = 117,940,512.34

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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.