Home / 189,779.16-261,900.82-103,742.90

Finding the Fourth Proportional to 189,779.16, 261,900.82 and 103,742.90

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Solution

The fourth proportional to 189,779.16, 261,900.82 and 103,742.90 is: 143,168.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,779.16 : 261,900.82 = 103,742.90 : x
  2. Step 2: Convert to fraction form
    189,779.16/261,900.82 = 103,742.90/x
  3. Step 3: Cross multiply
    189,779.16x = 261,900.82 × 103,742.90
  4. Step 4: Simplify right side
    189,779.16x = 27,170,350,579.18
  5. Step 5: Solve for x
    x = 27,170,350,579.18/189,779.16
  6. Step 6: Final answer
    x = 143,168.25

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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.