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Finding the Fourth Proportional to 173,405.70, 260,104.91 and 79,911.45

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Solution

The fourth proportional to 173,405.70, 260,104.91 and 79,911.45 is: 119,865.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,405.70 : 260,104.91 = 79,911.45 : x
  2. Step 2: Convert to fraction form
    173,405.70/260,104.91 = 79,911.45/x
  3. Step 3: Cross multiply
    173,405.70x = 260,104.91 × 79,911.45
  4. Step 4: Simplify right side
    173,405.70x = 20,785,360,110.66
  5. Step 5: Solve for x
    x = 20,785,360,110.66/173,405.70
  6. Step 6: Final answer
    x = 119,865.50

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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.