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Finding the Fourth Proportional to 157,563.72, 217,416.42 and 90,495.72

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Solution

The fourth proportional to 157,563.72, 217,416.42 and 90,495.72 is: 124,871.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,563.72 : 217,416.42 = 90,495.72 : x
  2. Step 2: Convert to fraction form
    157,563.72/217,416.42 = 90,495.72/x
  3. Step 3: Cross multiply
    157,563.72x = 217,416.42 × 90,495.72
  4. Step 4: Simplify right side
    157,563.72x = 19,675,255,467.72
  5. Step 5: Solve for x
    x = 19,675,255,467.72/157,563.72
  6. Step 6: Final answer
    x = 124,871.74

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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.