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Finding the Fourth Proportional to 157,485.46, 217,330.97 and 85,866.67

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Solution

The fourth proportional to 157,485.46, 217,330.97 and 85,866.67 is: 118,496.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,485.46 : 217,330.97 = 85,866.67 : x
  2. Step 2: Convert to fraction form
    157,485.46/217,330.97 = 85,866.67/x
  3. Step 3: Cross multiply
    157,485.46x = 217,330.97 × 85,866.67
  4. Step 4: Simplify right side
    157,485.46x = 18,661,485,165.78
  5. Step 5: Solve for x
    x = 18,661,485,165.78/157,485.46
  6. Step 6: Final answer
    x = 118,496.56

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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.