Home / 189,583.12-261,623.68-103,542.90

Finding the Fourth Proportional to 189,583.12, 261,623.68 and 103,542.90

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Solution

The fourth proportional to 189,583.12, 261,623.68 and 103,542.90 is: 142,888.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,583.12 : 261,623.68 = 103,542.90 : x
  2. Step 2: Convert to fraction form
    189,583.12/261,623.68 = 103,542.90/x
  3. Step 3: Cross multiply
    189,583.12x = 261,623.68 × 103,542.90
  4. Step 4: Simplify right side
    189,583.12x = 27,089,274,535.87
  5. Step 5: Solve for x
    x = 27,089,274,535.87/189,583.12
  6. Step 6: Final answer
    x = 142,888.64

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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.