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Finding the Fourth Proportional to 113,522.76, 156,497.76 and 79,425.60

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Solution

The fourth proportional to 113,522.76, 156,497.76 and 79,425.60 is: 109,492.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,522.76 : 156,497.76 = 79,425.60 : x
  2. Step 2: Convert to fraction form
    113,522.76/156,497.76 = 79,425.60/x
  3. Step 3: Cross multiply
    113,522.76x = 156,497.76 × 79,425.60
  4. Step 4: Simplify right side
    113,522.76x = 12,429,928,486.66
  5. Step 5: Solve for x
    x = 12,429,928,486.66/113,522.76
  6. Step 6: Final answer
    x = 109,492.83

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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.