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Finding the Fourth Proportional to 155,578.70, 214,700.13 and 87,582.44

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Solution

The fourth proportional to 155,578.70, 214,700.13 and 87,582.44 is: 120,864.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,578.70 : 214,700.13 = 87,582.44 : x
  2. Step 2: Convert to fraction form
    155,578.70/214,700.13 = 87,582.44/x
  3. Step 3: Cross multiply
    155,578.70x = 214,700.13 × 87,582.44
  4. Step 4: Simplify right side
    155,578.70x = 18,803,959,742.30
  5. Step 5: Solve for x
    x = 18,803,959,742.30/155,578.70
  6. Step 6: Final answer
    x = 120,864.62

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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.