Home / 112,103.66-154,615.57-71,821.17

Finding the Fourth Proportional to 112,103.66, 154,615.57 and 71,821.17

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Solution

The fourth proportional to 112,103.66, 154,615.57 and 71,821.17 is: 99,057.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,103.66 : 154,615.57 = 71,821.17 : x
  2. Step 2: Convert to fraction form
    112,103.66/154,615.57 = 71,821.17/x
  3. Step 3: Cross multiply
    112,103.66x = 154,615.57 × 71,821.17
  4. Step 4: Simplify right side
    112,103.66x = 11,104,670,958.06
  5. Step 5: Solve for x
    x = 11,104,670,958.06/112,103.66
  6. Step 6: Final answer
    x = 99,057.17

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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.