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Finding the Fourth Proportional to 111,213.60, 166,820.40 and 74,018.40

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Solution

The fourth proportional to 111,213.60, 166,820.40 and 74,018.40 is: 111,027.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,213.60 : 166,820.40 = 74,018.40 : x
  2. Step 2: Convert to fraction form
    111,213.60/166,820.40 = 74,018.40/x
  3. Step 3: Cross multiply
    111,213.60x = 166,820.40 × 74,018.40
  4. Step 4: Simplify right side
    111,213.60x = 12,347,779,095.36
  5. Step 5: Solve for x
    x = 12,347,779,095.36/111,213.60
  6. Step 6: Final answer
    x = 111,027.60

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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.