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Finding the Fourth Proportional to 157,615.85, 217,509.55 and 85,995.83

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Solution

The fourth proportional to 157,615.85, 217,509.55 and 85,995.83 is: 118,674.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,615.85 : 217,509.55 = 85,995.83 : x
  2. Step 2: Convert to fraction form
    157,615.85/217,509.55 = 85,995.83/x
  3. Step 3: Cross multiply
    157,615.85x = 217,509.55 × 85,995.83
  4. Step 4: Simplify right side
    157,615.85x = 18,704,912,982.64
  5. Step 5: Solve for x
    x = 18,704,912,982.64/157,615.85
  6. Step 6: Final answer
    x = 118,674.06

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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.