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Finding the Fourth Proportional to 172,953.90, 259,457.85 and 54,613.98

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Solution

The fourth proportional to 172,953.90, 259,457.85 and 54,613.98 is: 81,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,953.90 : 259,457.85 = 54,613.98 : x
  2. Step 2: Convert to fraction form
    172,953.90/259,457.85 = 54,613.98/x
  3. Step 3: Cross multiply
    172,953.90x = 259,457.85 × 54,613.98
  4. Step 4: Simplify right side
    172,953.90x = 14,170,025,830.74
  5. Step 5: Solve for x
    x = 14,170,025,830.74/172,953.90
  6. Step 6: Final answer
    x = 81,929.50

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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.