Home / 115,439.40-173,288.70-89,260.20

Finding the Fourth Proportional to 115,439.40, 173,288.70 and 89,260.20

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Solution

The fourth proportional to 115,439.40, 173,288.70 and 89,260.20 is: 133,990.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,439.40 : 173,288.70 = 89,260.20 : x
  2. Step 2: Convert to fraction form
    115,439.40/173,288.70 = 89,260.20/x
  3. Step 3: Cross multiply
    115,439.40x = 173,288.70 × 89,260.20
  4. Step 4: Simplify right side
    115,439.40x = 15,467,784,019.74
  5. Step 5: Solve for x
    x = 15,467,784,019.74/115,439.40
  6. Step 6: Final answer
    x = 133,990.51

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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.