Home / 112,113.52-154,629.14-71,831.04

Finding the Fourth Proportional to 112,113.52, 154,629.14 and 71,831.04

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Solution

The fourth proportional to 112,113.52, 154,629.14 and 71,831.04 is: 99,070.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,113.52 : 154,629.14 = 71,831.04 : x
  2. Step 2: Convert to fraction form
    112,113.52/154,629.14 = 71,831.04/x
  3. Step 3: Cross multiply
    112,113.52x = 154,629.14 × 71,831.04
  4. Step 4: Simplify right side
    112,113.52x = 11,107,171,001.49
  5. Step 5: Solve for x
    x = 11,107,171,001.49/112,113.52
  6. Step 6: Final answer
    x = 99,070.76

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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.