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Finding the Fourth Proportional to 176,813.80, 265,220.70 and 71,636.20

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Solution

The fourth proportional to 176,813.80, 265,220.70 and 71,636.20 is: 107,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,813.80 : 265,220.70 = 71,636.20 : x
  2. Step 2: Convert to fraction form
    176,813.80/265,220.70 = 71,636.20/x
  3. Step 3: Cross multiply
    176,813.80x = 265,220.70 × 71,636.20
  4. Step 4: Simplify right side
    176,813.80x = 18,999,403,109.34
  5. Step 5: Solve for x
    x = 18,999,403,109.34/176,813.80
  6. Step 6: Final answer
    x = 107,454.30

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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.