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Finding the Fourth Proportional to 161,538.02, 222,915.93 and 89,916.02

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Solution

The fourth proportional to 161,538.02, 222,915.93 and 89,916.02 is: 124,080.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,538.02 : 222,915.93 = 89,916.02 : x
  2. Step 2: Convert to fraction form
    161,538.02/222,915.93 = 89,916.02/x
  3. Step 3: Cross multiply
    161,538.02x = 222,915.93 × 89,916.02
  4. Step 4: Simplify right side
    161,538.02x = 20,043,713,220.20
  5. Step 5: Solve for x
    x = 20,043,713,220.20/161,538.02
  6. Step 6: Final answer
    x = 124,080.47

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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.