Home / 112,782.88-155,640.35-61,797.53

Finding the Fourth Proportional to 112,782.88, 155,640.35 and 61,797.53

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Solution

The fourth proportional to 112,782.88, 155,640.35 and 61,797.53 is: 85,280.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,782.88 : 155,640.35 = 61,797.53 : x
  2. Step 2: Convert to fraction form
    112,782.88/155,640.35 = 61,797.53/x
  3. Step 3: Cross multiply
    112,782.88x = 155,640.35 × 61,797.53
  4. Step 4: Simplify right side
    112,782.88x = 9,618,189,741.93
  5. Step 5: Solve for x
    x = 9,618,189,741.93/112,782.88
  6. Step 6: Final answer
    x = 85,280.58

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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.