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Finding the Fourth Proportional to 161,915.40, 242,873.10 and 155,694.60

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Solution

The fourth proportional to 161,915.40, 242,873.10 and 155,694.60 is: 233,541.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,915.40 : 242,873.10 = 155,694.60 : x
  2. Step 2: Convert to fraction form
    161,915.40/242,873.10 = 155,694.60/x
  3. Step 3: Cross multiply
    161,915.40x = 242,873.10 × 155,694.60
  4. Step 4: Simplify right side
    161,915.40x = 37,814,030,155.26
  5. Step 5: Solve for x
    x = 37,814,030,155.26/161,915.40
  6. Step 6: Final answer
    x = 233,541.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.