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Finding the Fourth Proportional to 157,283.03, 217,053.05 and 85,663.01

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Solution

The fourth proportional to 157,283.03, 217,053.05 and 85,663.01 is: 118,216.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,283.03 : 217,053.05 = 85,663.01 : x
  2. Step 2: Convert to fraction form
    157,283.03/217,053.05 = 85,663.01/x
  3. Step 3: Cross multiply
    157,283.03x = 217,053.05 × 85,663.01
  4. Step 4: Simplify right side
    157,283.03x = 18,593,416,079.10
  5. Step 5: Solve for x
    x = 18,593,416,079.10/157,283.03
  6. Step 6: Final answer
    x = 118,216.29

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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.