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Finding the Fourth Proportional to 159,100.97, 219,560.15 and 87,485.63

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Solution

The fourth proportional to 159,100.97, 219,560.15 and 87,485.63 is: 120,730.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,100.97 : 219,560.15 = 87,485.63 : x
  2. Step 2: Convert to fraction form
    159,100.97/219,560.15 = 87,485.63/x
  3. Step 3: Cross multiply
    159,100.97x = 219,560.15 × 87,485.63
  4. Step 4: Simplify right side
    159,100.97x = 19,208,357,166.56
  5. Step 5: Solve for x
    x = 19,208,357,166.56/159,100.97
  6. Step 6: Final answer
    x = 120,730.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.