Home / 126,741.08-189,980.40-51,829.04

Finding the Fourth Proportional to 126,741.08, 189,980.40 and 51,829.04

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Solution

The fourth proportional to 126,741.08, 189,980.40 and 51,829.04 is: 77,689.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,741.08 : 189,980.40 = 51,829.04 : x
  2. Step 2: Convert to fraction form
    126,741.08/189,980.40 = 51,829.04/x
  3. Step 3: Cross multiply
    126,741.08x = 189,980.40 × 51,829.04
  4. Step 4: Simplify right side
    126,741.08x = 9,846,501,750.82
  5. Step 5: Solve for x
    x = 9,846,501,750.82/126,741.08
  6. Step 6: Final answer
    x = 77,689.90

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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.