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Finding the Fourth Proportional to 110,907.60, 166,069.80 and 81,164.40

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Solution

The fourth proportional to 110,907.60, 166,069.80 and 81,164.40 is: 121,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,907.60 : 166,069.80 = 81,164.40 : x
  2. Step 2: Convert to fraction form
    110,907.60/166,069.80 = 81,164.40/x
  3. Step 3: Cross multiply
    110,907.60x = 166,069.80 × 81,164.40
  4. Step 4: Simplify right side
    110,907.60x = 13,478,955,675.12
  5. Step 5: Solve for x
    x = 13,478,955,675.12/110,907.60
  6. Step 6: Final answer
    x = 121,533.20

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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.