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Finding the Fourth Proportional to 102,762.16, 154,150.80 and 43,591.12

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Solution

The fourth proportional to 102,762.16, 154,150.80 and 43,591.12 is: 65,389.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,762.16 : 154,150.80 = 43,591.12 : x
  2. Step 2: Convert to fraction form
    102,762.16/154,150.80 = 43,591.12/x
  3. Step 3: Cross multiply
    102,762.16x = 154,150.80 × 43,591.12
  4. Step 4: Simplify right side
    102,762.16x = 6,719,606,020.90
  5. Step 5: Solve for x
    x = 6,719,606,020.90/102,762.16
  6. Step 6: Final answer
    x = 65,389.89

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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.