Home / 189,142.54-261,013.50-103,102.48

Finding the Fourth Proportional to 189,142.54, 261,013.50 and 103,102.48

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Solution

The fourth proportional to 189,142.54, 261,013.50 and 103,102.48 is: 142,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,142.54 : 261,013.50 = 103,102.48 : x
  2. Step 2: Convert to fraction form
    189,142.54/261,013.50 = 103,102.48/x
  3. Step 3: Cross multiply
    189,142.54x = 261,013.50 × 103,102.48
  4. Step 4: Simplify right side
    189,142.54x = 26,911,139,163.48
  5. Step 5: Solve for x
    x = 26,911,139,163.48/189,142.54
  6. Step 6: Final answer
    x = 142,279.68

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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.