Home / 112,438.53-155,183.04-64,682.55

Finding the Fourth Proportional to 112,438.53, 155,183.04 and 64,682.55

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Solution

The fourth proportional to 112,438.53, 155,183.04 and 64,682.55 is: 89,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,438.53 : 155,183.04 = 64,682.55 : x
  2. Step 2: Convert to fraction form
    112,438.53/155,183.04 = 64,682.55/x
  3. Step 3: Cross multiply
    112,438.53x = 155,183.04 × 64,682.55
  4. Step 4: Simplify right side
    112,438.53x = 10,037,634,743.95
  5. Step 5: Solve for x
    x = 10,037,634,743.95/112,438.53
  6. Step 6: Final answer
    x = 89,272.20

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1.5x scale

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.