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Finding the Fourth Proportional to 156,762, 216,393.56 and 109,043.04

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Solution

The fourth proportional to 156,762, 216,393.56 and 109,043.04 is: 150,522.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,762 : 216,393.56 = 109,043.04 : x
  2. Step 2: Convert to fraction form
    156,762/216,393.56 = 109,043.04/x
  3. Step 3: Cross multiply
    156,762x = 216,393.56 × 109,043.04
  4. Step 4: Simplify right side
    156,762x = 23,596,211,618.82
  5. Step 5: Solve for x
    x = 23,596,211,618.82/156,762
  6. Step 6: Final answer
    x = 150,522.52

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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.