Home / 112,511.03-155,192.06-72,160.88

Finding the Fourth Proportional to 112,511.03, 155,192.06 and 72,160.88

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Solution

The fourth proportional to 112,511.03, 155,192.06 and 72,160.88 is: 99,535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,511.03 : 155,192.06 = 72,160.88 : x
  2. Step 2: Convert to fraction form
    112,511.03/155,192.06 = 72,160.88/x
  3. Step 3: Cross multiply
    112,511.03x = 155,192.06 × 72,160.88
  4. Step 4: Simplify right side
    112,511.03x = 11,198,795,023.05
  5. Step 5: Solve for x
    x = 11,198,795,023.05/112,511.03
  6. Step 6: Final answer
    x = 99,535.09

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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.