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Finding the Fourth Proportional to 173,664.80, 260,059.80 and 138,672.80

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Solution

The fourth proportional to 173,664.80, 260,059.80 and 138,672.80 is: 207,659.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,664.80 : 260,059.80 = 138,672.80 : x
  2. Step 2: Convert to fraction form
    173,664.80/260,059.80 = 138,672.80/x
  3. Step 3: Cross multiply
    173,664.80x = 260,059.80 × 138,672.80
  4. Step 4: Simplify right side
    173,664.80x = 36,063,220,633.44
  5. Step 5: Solve for x
    x = 36,063,220,633.44/173,664.80
  6. Step 6: Final answer
    x = 207,659.93

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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.