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Finding the Fourth Proportional to 170,624.40, 255,610.20 and 91,712.40

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Solution

The fourth proportional to 170,624.40, 255,610.20 and 91,712.40 is: 137,393.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,624.40 : 255,610.20 = 91,712.40 : x
  2. Step 2: Convert to fraction form
    170,624.40/255,610.20 = 91,712.40/x
  3. Step 3: Cross multiply
    170,624.40x = 255,610.20 × 91,712.40
  4. Step 4: Simplify right side
    170,624.40x = 23,442,624,906.48
  5. Step 5: Solve for x
    x = 23,442,624,906.48/170,624.40
  6. Step 6: Final answer
    x = 137,393.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.