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Finding the Fourth Proportional to 156,495.66, 216,047.72 and 122,431.74

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Solution

The fourth proportional to 156,495.66, 216,047.72 and 122,431.74 is: 169,021.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,495.66 : 216,047.72 = 122,431.74 : x
  2. Step 2: Convert to fraction form
    156,495.66/216,047.72 = 122,431.74/x
  3. Step 3: Cross multiply
    156,495.66x = 216,047.72 × 122,431.74
  4. Step 4: Simplify right side
    156,495.66x = 26,451,098,282.63
  5. Step 5: Solve for x
    x = 26,451,098,282.63/156,495.66
  6. Step 6: Final answer
    x = 169,021.29

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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.