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Finding the Fourth Proportional to 189,307.63, 261,250.36 and 108,751.31

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Solution

The fourth proportional to 189,307.63, 261,250.36 and 108,751.31 is: 150,080.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,307.63 : 261,250.36 = 108,751.31 : x
  2. Step 2: Convert to fraction form
    189,307.63/261,250.36 = 108,751.31/x
  3. Step 3: Cross multiply
    189,307.63x = 261,250.36 × 108,751.31
  4. Step 4: Simplify right side
    189,307.63x = 28,411,318,901.26
  5. Step 5: Solve for x
    x = 28,411,318,901.26/189,307.63
  6. Step 6: Final answer
    x = 150,080.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.