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Finding the Fourth Proportional to 102,802.80, 154,261.80 and 43,628.40

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Solution

The fourth proportional to 102,802.80, 154,261.80 and 43,628.40 is: 65,467.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,802.80 : 154,261.80 = 43,628.40 : x
  2. Step 2: Convert to fraction form
    102,802.80/154,261.80 = 43,628.40/x
  3. Step 3: Cross multiply
    102,802.80x = 154,261.80 × 43,628.40
  4. Step 4: Simplify right side
    102,802.80x = 6,730,195,515.12
  5. Step 5: Solve for x
    x = 6,730,195,515.12/102,802.80
  6. Step 6: Final answer
    x = 65,467.04

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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.