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Finding the Fourth Proportional to 157,227.01, 216,971.10 and 85,607.03

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Solution

The fourth proportional to 157,227.01, 216,971.10 and 85,607.03 is: 118,136.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,227.01 : 216,971.10 = 85,607.03 : x
  2. Step 2: Convert to fraction form
    157,227.01/216,971.10 = 85,607.03/x
  3. Step 3: Cross multiply
    157,227.01x = 216,971.10 × 85,607.03
  4. Step 4: Simplify right side
    157,227.01x = 18,574,251,466.83
  5. Step 5: Solve for x
    x = 18,574,251,466.83/157,227.01
  6. Step 6: Final answer
    x = 118,136.52

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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.