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Finding the Fourth Proportional to 161,930.40, 242,895.60 and 155,709.60

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Solution

The fourth proportional to 161,930.40, 242,895.60 and 155,709.60 is: 233,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,930.40 : 242,895.60 = 155,709.60 : x
  2. Step 2: Convert to fraction form
    161,930.40/242,895.60 = 155,709.60/x
  3. Step 3: Cross multiply
    161,930.40x = 242,895.60 × 155,709.60
  4. Step 4: Simplify right side
    161,930.40x = 37,821,176,717.76
  5. Step 5: Solve for x
    x = 37,821,176,717.76/161,930.40
  6. Step 6: Final answer
    x = 233,564.40

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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.