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Finding the Fourth Proportional to 103,313.30, 154,969.95 and 73,132.70

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Solution

The fourth proportional to 103,313.30, 154,969.95 and 73,132.70 is: 109,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,313.30 : 154,969.95 = 73,132.70 : x
  2. Step 2: Convert to fraction form
    103,313.30/154,969.95 = 73,132.70/x
  3. Step 3: Cross multiply
    103,313.30x = 154,969.95 × 73,132.70
  4. Step 4: Simplify right side
    103,313.30x = 11,333,370,862.37
  5. Step 5: Solve for x
    x = 11,333,370,862.37/103,313.30
  6. Step 6: Final answer
    x = 109,699.05

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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.