Home / 189,435.52-261,421.56-103,395.28

Finding the Fourth Proportional to 189,435.52, 261,421.56 and 103,395.28

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Solution

The fourth proportional to 189,435.52, 261,421.56 and 103,395.28 is: 142,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,435.52 : 261,421.56 = 103,395.28 : x
  2. Step 2: Convert to fraction form
    189,435.52/261,421.56 = 103,395.28/x
  3. Step 3: Cross multiply
    189,435.52x = 261,421.56 × 103,395.28
  4. Step 4: Simplify right side
    189,435.52x = 27,029,755,394.24
  5. Step 5: Solve for x
    x = 27,029,755,394.24/189,435.52
  6. Step 6: Final answer
    x = 142,685.78

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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.