Home / 81,534.40-122,301.60-74,276.80

Finding the Fourth Proportional to 81,534.40, 122,301.60 and 74,276.80

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Solution

The fourth proportional to 81,534.40, 122,301.60 and 74,276.80 is: 111,415.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,534.40 : 122,301.60 = 74,276.80 : x
  2. Step 2: Convert to fraction form
    81,534.40/122,301.60 = 74,276.80/x
  3. Step 3: Cross multiply
    81,534.40x = 122,301.60 × 74,276.80
  4. Step 4: Simplify right side
    81,534.40x = 9,084,171,482.88
  5. Step 5: Solve for x
    x = 9,084,171,482.88/81,534.40
  6. Step 6: Final answer
    x = 111,415.20

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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.