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Finding the Fourth Proportional to 102,684.80, 153,960.60 and 43,504.40

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Solution

The fourth proportional to 102,684.80, 153,960.60 and 43,504.40 is: 65,228.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,684.80 : 153,960.60 = 43,504.40 : x
  2. Step 2: Convert to fraction form
    102,684.80/153,960.60 = 43,504.40/x
  3. Step 3: Cross multiply
    102,684.80x = 153,960.60 × 43,504.40
  4. Step 4: Simplify right side
    102,684.80x = 6,697,963,526.64
  5. Step 5: Solve for x
    x = 6,697,963,526.64/102,684.80
  6. Step 6: Final answer
    x = 65,228.38

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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.