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Finding the Fourth Proportional to 110,901.60, 166,060.80 and 81,158.40

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Solution

The fourth proportional to 110,901.60, 166,060.80 and 81,158.40 is: 121,524.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,901.60 : 166,060.80 = 81,158.40 : x
  2. Step 2: Convert to fraction form
    110,901.60/166,060.80 = 81,158.40/x
  3. Step 3: Cross multiply
    110,901.60x = 166,060.80 × 81,158.40
  4. Step 4: Simplify right side
    110,901.60x = 13,477,228,830.72
  5. Step 5: Solve for x
    x = 13,477,228,830.72/110,901.60
  6. Step 6: Final answer
    x = 121,524.21

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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.