Home / 127,811.30-191,716.95-80,572.10

Finding the Fourth Proportional to 127,811.30, 191,716.95 and 80,572.10

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Solution

The fourth proportional to 127,811.30, 191,716.95 and 80,572.10 is: 120,858.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,811.30 : 191,716.95 = 80,572.10 : x
  2. Step 2: Convert to fraction form
    127,811.30/191,716.95 = 80,572.10/x
  3. Step 3: Cross multiply
    127,811.30x = 191,716.95 × 80,572.10
  4. Step 4: Simplify right side
    127,811.30x = 15,447,037,267.10
  5. Step 5: Solve for x
    x = 15,447,037,267.10/127,811.30
  6. Step 6: Final answer
    x = 120,858.15

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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.