Home / 189,779.66-261,901.48-103,743.38

Finding the Fourth Proportional to 189,779.66, 261,901.48 and 103,743.38

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Solution

The fourth proportional to 189,779.66, 261,901.48 and 103,743.38 is: 143,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,779.66 : 261,901.48 = 103,743.38 : x
  2. Step 2: Convert to fraction form
    189,779.66/261,901.48 = 103,743.38/x
  3. Step 3: Cross multiply
    189,779.66x = 261,901.48 × 103,743.38
  4. Step 4: Simplify right side
    189,779.66x = 27,170,544,762.20
  5. Step 5: Solve for x
    x = 27,170,544,762.20/189,779.66
  6. Step 6: Final answer
    x = 143,168.90

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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.