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Finding the Fourth Proportional to 145,156.35, 217,748.22 and 56,416.65

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Solution

The fourth proportional to 145,156.35, 217,748.22 and 56,416.65 is: 84,630.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,156.35 : 217,748.22 = 56,416.65 : x
  2. Step 2: Convert to fraction form
    145,156.35/217,748.22 = 56,416.65/x
  3. Step 3: Cross multiply
    145,156.35x = 217,748.22 × 56,416.65
  4. Step 4: Simplify right side
    145,156.35x = 12,284,625,115.86
  5. Step 5: Solve for x
    x = 12,284,625,115.86/145,156.35
  6. Step 6: Final answer
    x = 84,630.30

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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.