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Finding the Fourth Proportional to 162,736.80, 243,910.80 and 83,810.40

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Solution

The fourth proportional to 162,736.80, 243,910.80 and 83,810.40 is: 125,615.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,736.80 : 243,910.80 = 83,810.40 : x
  2. Step 2: Convert to fraction form
    162,736.80/243,910.80 = 83,810.40/x
  3. Step 3: Cross multiply
    162,736.80x = 243,910.80 × 83,810.40
  4. Step 4: Simplify right side
    162,736.80x = 20,442,261,712.32
  5. Step 5: Solve for x
    x = 20,442,261,712.32/162,736.80
  6. Step 6: Final answer
    x = 125,615.48

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1.5x scale

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.