Home / 112,485.12-168,380.16-61,757.28

Finding the Fourth Proportional to 112,485.12, 168,380.16 and 61,757.28

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Solution

The fourth proportional to 112,485.12, 168,380.16 and 61,757.28 is: 92,445.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,485.12 : 168,380.16 = 61,757.28 : x
  2. Step 2: Convert to fraction form
    112,485.12/168,380.16 = 61,757.28/x
  3. Step 3: Cross multiply
    112,485.12x = 168,380.16 × 61,757.28
  4. Step 4: Simplify right side
    112,485.12x = 10,398,700,687.56
  5. Step 5: Solve for x
    x = 10,398,700,687.56/112,485.12
  6. Step 6: Final answer
    x = 92,445.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.