Home / 126,080.97-189,181.53-78,683.19

Finding the Fourth Proportional to 126,080.97, 189,181.53 and 78,683.19

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Solution

The fourth proportional to 126,080.97, 189,181.53 and 78,683.19 is: 118,062.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,080.97 : 189,181.53 = 78,683.19 : x
  2. Step 2: Convert to fraction form
    126,080.97/189,181.53 = 78,683.19/x
  3. Step 3: Cross multiply
    126,080.97x = 189,181.53 × 78,683.19
  4. Step 4: Simplify right side
    126,080.97x = 14,885,406,269.48
  5. Step 5: Solve for x
    x = 14,885,406,269.48/126,080.97
  6. Step 6: Final answer
    x = 118,062.28

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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.