Home / 112,885.20-155,711.08-72,651.60

Finding the Fourth Proportional to 112,885.20, 155,711.08 and 72,651.60

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Solution

The fourth proportional to 112,885.20, 155,711.08 and 72,651.60 is: 100,213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,885.20 : 155,711.08 = 72,651.60 : x
  2. Step 2: Convert to fraction form
    112,885.20/155,711.08 = 72,651.60/x
  3. Step 3: Cross multiply
    112,885.20x = 155,711.08 × 72,651.60
  4. Step 4: Simplify right side
    112,885.20x = 11,312,659,099.73
  5. Step 5: Solve for x
    x = 11,312,659,099.73/112,885.20
  6. Step 6: Final answer
    x = 100,213.84

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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.