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Finding the Fourth Proportional to 156,281.63, 215,668.32 and 84,663.41

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Solution

The fourth proportional to 156,281.63, 215,668.32 and 84,663.41 is: 116,835.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,281.63 : 215,668.32 = 84,663.41 : x
  2. Step 2: Convert to fraction form
    156,281.63/215,668.32 = 84,663.41/x
  3. Step 3: Cross multiply
    156,281.63x = 215,668.32 × 84,663.41
  4. Step 4: Simplify right side
    156,281.63x = 18,259,215,400.17
  5. Step 5: Solve for x
    x = 18,259,215,400.17/156,281.63
  6. Step 6: Final answer
    x = 116,835.33

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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.