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Finding the Fourth Proportional to 122,327.70, 183,491.55 and 85,002.90

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Solution

The fourth proportional to 122,327.70, 183,491.55 and 85,002.90 is: 127,504.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,327.70 : 183,491.55 = 85,002.90 : x
  2. Step 2: Convert to fraction form
    122,327.70/183,491.55 = 85,002.90/x
  3. Step 3: Cross multiply
    122,327.70x = 183,491.55 × 85,002.90
  4. Step 4: Simplify right side
    122,327.70x = 15,597,313,875.50
  5. Step 5: Solve for x
    x = 15,597,313,875.50/122,327.70
  6. Step 6: Final answer
    x = 127,504.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.