Home / 115,755.20-173,632.80-71,237.60

Finding the Fourth Proportional to 115,755.20, 173,632.80 and 71,237.60

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Solution

The fourth proportional to 115,755.20, 173,632.80 and 71,237.60 is: 106,856.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,755.20 : 173,632.80 = 71,237.60 : x
  2. Step 2: Convert to fraction form
    115,755.20/173,632.80 = 71,237.60/x
  3. Step 3: Cross multiply
    115,755.20x = 173,632.80 × 71,237.60
  4. Step 4: Simplify right side
    115,755.20x = 12,369,183,953.28
  5. Step 5: Solve for x
    x = 12,369,183,953.28/115,755.20
  6. Step 6: Final answer
    x = 106,856.40

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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.