Home / 126,189.58-174,141.30-72,478.08

Finding the Fourth Proportional to 126,189.58, 174,141.30 and 72,478.08

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Solution

The fourth proportional to 126,189.58, 174,141.30 and 72,478.08 is: 100,019.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,189.58 : 174,141.30 = 72,478.08 : x
  2. Step 2: Convert to fraction form
    126,189.58/174,141.30 = 72,478.08/x
  3. Step 3: Cross multiply
    126,189.58x = 174,141.30 × 72,478.08
  4. Step 4: Simplify right side
    126,189.58x = 12,621,427,072.70
  5. Step 5: Solve for x
    x = 12,621,427,072.70/126,189.58
  6. Step 6: Final answer
    x = 100,019.57

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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.