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Finding the Fourth Proportional to 157,368.45, 217,165.63 and 85,748.97

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Solution

The fourth proportional to 157,368.45, 217,165.63 and 85,748.97 is: 118,332.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,368.45 : 217,165.63 = 85,748.97 : x
  2. Step 2: Convert to fraction form
    157,368.45/217,165.63 = 85,748.97/x
  3. Step 3: Cross multiply
    157,368.45x = 217,165.63 × 85,748.97
  4. Step 4: Simplify right side
    157,368.45x = 18,621,729,091.90
  5. Step 5: Solve for x
    x = 18,621,729,091.90/157,368.45
  6. Step 6: Final answer
    x = 118,332.04

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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.