Home / 112,905.87-155,810.32-61,918.96

Finding the Fourth Proportional to 112,905.87, 155,810.32 and 61,918.96

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Solution

The fourth proportional to 112,905.87, 155,810.32 and 61,918.96 is: 85,448.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,905.87 : 155,810.32 = 61,918.96 : x
  2. Step 2: Convert to fraction form
    112,905.87/155,810.32 = 61,918.96/x
  3. Step 3: Cross multiply
    112,905.87x = 155,810.32 × 61,918.96
  4. Step 4: Simplify right side
    112,905.87x = 9,647,611,883.02
  5. Step 5: Solve for x
    x = 9,647,611,883.02/112,905.87
  6. Step 6: Final answer
    x = 85,448.28

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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.