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Finding the Fourth Proportional to 163,918.40, 245,877.60 and 161,460.80

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Solution

The fourth proportional to 163,918.40, 245,877.60 and 161,460.80 is: 242,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,918.40 : 245,877.60 = 161,460.80 : x
  2. Step 2: Convert to fraction form
    163,918.40/245,877.60 = 161,460.80/x
  3. Step 3: Cross multiply
    163,918.40x = 245,877.60 × 161,460.80
  4. Step 4: Simplify right side
    163,918.40x = 39,699,593,998.08
  5. Step 5: Solve for x
    x = 39,699,593,998.08/163,918.40
  6. Step 6: Final answer
    x = 242,191.20

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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.