Home / 189,409.68-261,391.64-103,373.37

Finding the Fourth Proportional to 189,409.68, 261,391.64 and 103,373.37

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Solution

The fourth proportional to 189,409.68, 261,391.64 and 103,373.37 is: 142,658.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,409.68 : 261,391.64 = 103,373.37 : x
  2. Step 2: Convert to fraction form
    189,409.68/261,391.64 = 103,373.37/x
  3. Step 3: Cross multiply
    189,409.68x = 261,391.64 × 103,373.37
  4. Step 4: Simplify right side
    189,409.68x = 27,020,934,199.76
  5. Step 5: Solve for x
    x = 27,020,934,199.76/189,409.68
  6. Step 6: Final answer
    x = 142,658.68

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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.