Home / 81,228.93-112,148.75-72,716.54

Finding the Fourth Proportional to 81,228.93, 112,148.75 and 72,716.54

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Solution

The fourth proportional to 81,228.93, 112,148.75 and 72,716.54 is: 100,396.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,228.93 : 112,148.75 = 72,716.54 : x
  2. Step 2: Convert to fraction form
    81,228.93/112,148.75 = 72,716.54/x
  3. Step 3: Cross multiply
    81,228.93x = 112,148.75 × 72,716.54
  4. Step 4: Simplify right side
    81,228.93x = 8,155,068,686.37
  5. Step 5: Solve for x
    x = 8,155,068,686.37/81,228.93
  6. Step 6: Final answer
    x = 100,396.12

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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.