Home / 145,166.49-200,339.64-80,643.09

Finding the Fourth Proportional to 145,166.49, 200,339.64 and 80,643.09

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Solution

The fourth proportional to 145,166.49, 200,339.64 and 80,643.09 is: 111,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,166.49 : 200,339.64 = 80,643.09 : x
  2. Step 2: Convert to fraction form
    145,166.49/200,339.64 = 80,643.09/x
  3. Step 3: Cross multiply
    145,166.49x = 200,339.64 × 80,643.09
  4. Step 4: Simplify right side
    145,166.49x = 16,156,007,619.09
  5. Step 5: Solve for x
    x = 16,156,007,619.09/145,166.49
  6. Step 6: Final answer
    x = 111,292.95

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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.