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Finding the Fourth Proportional to 157,617.90, 217,512.63 and 101,029.23

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Solution

The fourth proportional to 157,617.90, 217,512.63 and 101,029.23 is: 139,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,617.90 : 217,512.63 = 101,029.23 : x
  2. Step 2: Convert to fraction form
    157,617.90/217,512.63 = 101,029.23/x
  3. Step 3: Cross multiply
    157,617.90x = 217,512.63 × 101,029.23
  4. Step 4: Simplify right side
    157,617.90x = 21,975,133,524.17
  5. Step 5: Solve for x
    x = 21,975,133,524.17/157,617.90
  6. Step 6: Final answer
    x = 139,420.29

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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.