Home / 145,997.18-218,890.60-89,720.97

Finding the Fourth Proportional to 145,997.18, 218,890.60 and 89,720.97

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Solution

The fourth proportional to 145,997.18, 218,890.60 and 89,720.97 is: 134,516.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,997.18 : 218,890.60 = 89,720.97 : x
  2. Step 2: Convert to fraction form
    145,997.18/218,890.60 = 89,720.97/x
  3. Step 3: Cross multiply
    145,997.18x = 218,890.60 × 89,720.97
  4. Step 4: Simplify right side
    145,997.18x = 19,639,076,415.42
  5. Step 5: Solve for x
    x = 19,639,076,415.42/145,997.18
  6. Step 6: Final answer
    x = 134,516.82

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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.