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Finding the Fourth Proportional to 156,668.87, 216,203.48 and 85,048.94

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Solution

The fourth proportional to 156,668.87, 216,203.48 and 85,048.94 is: 117,367.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,668.87 : 216,203.48 = 85,048.94 : x
  2. Step 2: Convert to fraction form
    156,668.87/216,203.48 = 85,048.94/x
  3. Step 3: Cross multiply
    156,668.87x = 216,203.48 × 85,048.94
  4. Step 4: Simplify right side
    156,668.87x = 18,387,875,292.05
  5. Step 5: Solve for x
    x = 18,387,875,292.05/156,668.87
  6. Step 6: Final answer
    x = 117,367.77

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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.