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Finding the Fourth Proportional to 145,173.56, 217,843.50 and 56,415.56

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Solution

The fourth proportional to 145,173.56, 217,843.50 and 56,415.56 is: 84,655.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,173.56 : 217,843.50 = 56,415.56 : x
  2. Step 2: Convert to fraction form
    145,173.56/217,843.50 = 56,415.56/x
  3. Step 3: Cross multiply
    145,173.56x = 217,843.50 × 56,415.56
  4. Step 4: Simplify right side
    145,173.56x = 12,289,763,044.86
  5. Step 5: Solve for x
    x = 12,289,763,044.86/145,173.56
  6. Step 6: Final answer
    x = 84,655.66

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1.5x scale

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.