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Finding the Fourth Proportional to 92,485.60, 138,728.40 and 30,156.10

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Solution

The fourth proportional to 92,485.60, 138,728.40 and 30,156.10 is: 45,234.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,485.60 : 138,728.40 = 30,156.10 : x
  2. Step 2: Convert to fraction form
    92,485.60/138,728.40 = 30,156.10/x
  3. Step 3: Cross multiply
    92,485.60x = 138,728.40 × 30,156.10
  4. Step 4: Simplify right side
    92,485.60x = 4,183,507,503.24
  5. Step 5: Solve for x
    x = 4,183,507,503.24/92,485.60
  6. Step 6: Final answer
    x = 45,234.15

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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.