Home / 145,222.36-200,406.21-80,702.11

Finding the Fourth Proportional to 145,222.36, 200,406.21 and 80,702.11

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Solution

The fourth proportional to 145,222.36, 200,406.21 and 80,702.11 is: 111,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,222.36 : 200,406.21 = 80,702.11 : x
  2. Step 2: Convert to fraction form
    145,222.36/200,406.21 = 80,702.11/x
  3. Step 3: Cross multiply
    145,222.36x = 200,406.21 × 80,702.11
  4. Step 4: Simplify right side
    145,222.36x = 16,173,204,004.10
  5. Step 5: Solve for x
    x = 16,173,204,004.10/145,222.36
  6. Step 6: Final answer
    x = 111,368.55

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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.