Home / 126,459.08-189,739.62-56,290.40

Finding the Fourth Proportional to 126,459.08, 189,739.62 and 56,290.40

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Solution

The fourth proportional to 126,459.08, 189,739.62 and 56,290.40 is: 84,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,459.08 : 189,739.62 = 56,290.40 : x
  2. Step 2: Convert to fraction form
    126,459.08/189,739.62 = 56,290.40/x
  3. Step 3: Cross multiply
    126,459.08x = 189,739.62 × 56,290.40
  4. Step 4: Simplify right side
    126,459.08x = 10,680,519,105.65
  5. Step 5: Solve for x
    x = 10,680,519,105.65/126,459.08
  6. Step 6: Final answer
    x = 84,458.30

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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.