Home / 81,250.74-121,777.68-71,409.24

Finding the Fourth Proportional to 81,250.74, 121,777.68 and 71,409.24

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Solution

The fourth proportional to 81,250.74, 121,777.68 and 71,409.24 is: 107,027.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,250.74 : 121,777.68 = 71,409.24 : x
  2. Step 2: Convert to fraction form
    81,250.74/121,777.68 = 71,409.24/x
  3. Step 3: Cross multiply
    81,250.74x = 121,777.68 × 71,409.24
  4. Step 4: Simplify right side
    81,250.74x = 8,696,051,577.76
  5. Step 5: Solve for x
    x = 8,696,051,577.76/81,250.74
  6. Step 6: Final answer
    x = 107,027.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.