Home / 103,455.80-155,183.70-61,465.40

Finding the Fourth Proportional to 103,455.80, 155,183.70 and 61,465.40

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Solution

The fourth proportional to 103,455.80, 155,183.70 and 61,465.40 is: 92,198.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,455.80 : 155,183.70 = 61,465.40 : x
  2. Step 2: Convert to fraction form
    103,455.80/155,183.70 = 61,465.40/x
  3. Step 3: Cross multiply
    103,455.80x = 155,183.70 × 61,465.40
  4. Step 4: Simplify right side
    103,455.80x = 9,538,428,193.98
  5. Step 5: Solve for x
    x = 9,538,428,193.98/103,455.80
  6. Step 6: Final answer
    x = 92,198.10

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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.