Home / 112,103.84-154,615.76-71,821.32

Finding the Fourth Proportional to 112,103.84, 154,615.76 and 71,821.32

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Solution

The fourth proportional to 112,103.84, 154,615.76 and 71,821.32 is: 99,057.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,103.84 : 154,615.76 = 71,821.32 : x
  2. Step 2: Convert to fraction form
    112,103.84/154,615.76 = 71,821.32/x
  3. Step 3: Cross multiply
    112,103.84x = 154,615.76 × 71,821.32
  4. Step 4: Simplify right side
    112,103.84x = 11,104,707,976.00
  5. Step 5: Solve for x
    x = 11,104,707,976.00/112,103.84
  6. Step 6: Final answer
    x = 99,057.34

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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.