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Finding the Fourth Proportional to 105,204.40, 157,806.60 and 81,703.60

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Solution

The fourth proportional to 105,204.40, 157,806.60 and 81,703.60 is: 122,555.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,204.40 : 157,806.60 = 81,703.60 : x
  2. Step 2: Convert to fraction form
    105,204.40/157,806.60 = 81,703.60/x
  3. Step 3: Cross multiply
    105,204.40x = 157,806.60 × 81,703.60
  4. Step 4: Simplify right side
    105,204.40x = 12,893,367,323.76
  5. Step 5: Solve for x
    x = 12,893,367,323.76/105,204.40
  6. Step 6: Final answer
    x = 122,555.40

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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.