Home / 126,074.97-189,172.53-78,677.19

Finding the Fourth Proportional to 126,074.97, 189,172.53 and 78,677.19

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Solution

The fourth proportional to 126,074.97, 189,172.53 and 78,677.19 is: 118,053.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,074.97 : 189,172.53 = 78,677.19 : x
  2. Step 2: Convert to fraction form
    126,074.97/189,172.53 = 78,677.19/x
  3. Step 3: Cross multiply
    126,074.97x = 189,172.53 × 78,677.19
  4. Step 4: Simplify right side
    126,074.97x = 14,883,563,085.59
  5. Step 5: Solve for x
    x = 14,883,563,085.59/126,074.97
  6. Step 6: Final answer
    x = 118,053.27

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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.