Home / 145,222.86-200,406.90-80,702.61

Finding the Fourth Proportional to 145,222.86, 200,406.90 and 80,702.61

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Solution

The fourth proportional to 145,222.86, 200,406.90 and 80,702.61 is: 111,369.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,222.86 : 200,406.90 = 80,702.61 : x
  2. Step 2: Convert to fraction form
    145,222.86/200,406.90 = 80,702.61/x
  3. Step 3: Cross multiply
    145,222.86x = 200,406.90 × 80,702.61
  4. Step 4: Simplify right side
    145,222.86x = 16,173,359,892.01
  5. Step 5: Solve for x
    x = 16,173,359,892.01/145,222.86
  6. Step 6: Final answer
    x = 111,369.24

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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.