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Finding the Fourth Proportional to 135,124.20, 186,073.20 and 115,862.40

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Solution

The fourth proportional to 135,124.20, 186,073.20 and 115,862.40 is: 159,548.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,124.20 : 186,073.20 = 115,862.40 : x
  2. Step 2: Convert to fraction form
    135,124.20/186,073.20 = 115,862.40/x
  3. Step 3: Cross multiply
    135,124.20x = 186,073.20 × 115,862.40
  4. Step 4: Simplify right side
    135,124.20x = 21,558,887,527.68
  5. Step 5: Solve for x
    x = 21,558,887,527.68/135,124.20
  6. Step 6: Final answer
    x = 159,548.68

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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.