Home / 112,513.61-155,195.61-72,163.46

Finding the Fourth Proportional to 112,513.61, 155,195.61 and 72,163.46

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Solution

The fourth proportional to 112,513.61, 155,195.61 and 72,163.46 is: 99,538.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,513.61 : 155,195.61 = 72,163.46 : x
  2. Step 2: Convert to fraction form
    112,513.61/155,195.61 = 72,163.46/x
  3. Step 3: Cross multiply
    112,513.61x = 155,195.61 × 72,163.46
  4. Step 4: Simplify right side
    112,513.61x = 11,199,451,418.43
  5. Step 5: Solve for x
    x = 11,199,451,418.43/112,513.61
  6. Step 6: Final answer
    x = 99,538.64

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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.