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Finding the Fourth Proportional to 145,007.91, 200,134.98 and 84,578.55

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Solution

The fourth proportional to 145,007.91, 200,134.98 and 84,578.55 is: 116,732.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,007.91 : 200,134.98 = 84,578.55 : x
  2. Step 2: Convert to fraction form
    145,007.91/200,134.98 = 84,578.55/x
  3. Step 3: Cross multiply
    145,007.91x = 200,134.98 × 84,578.55
  4. Step 4: Simplify right side
    145,007.91x = 16,927,126,662.85
  5. Step 5: Solve for x
    x = 16,927,126,662.85/145,007.91
  6. Step 6: Final answer
    x = 116,732.44

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1.5x scale

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.