Home / 156,738.75-216,293.69-85,117.23

Finding the Fourth Proportional to 156,738.75, 216,293.69 and 85,117.23

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Solution

The fourth proportional to 156,738.75, 216,293.69 and 85,117.23 is: 117,458.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,738.75 : 216,293.69 = 85,117.23 : x
  2. Step 2: Convert to fraction form
    156,738.75/216,293.69 = 85,117.23/x
  3. Step 3: Cross multiply
    156,738.75x = 216,293.69 × 85,117.23
  4. Step 4: Simplify right side
    156,738.75x = 18,410,319,972.07
  5. Step 5: Solve for x
    x = 18,410,319,972.07/156,738.75
  6. Step 6: Final answer
    x = 117,458.64

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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.