Home / 109,518.60-164,279.20-42,990.06

Finding the Fourth Proportional to 109,518.60, 164,279.20 and 42,990.06

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Solution

The fourth proportional to 109,518.60, 164,279.20 and 42,990.06 is: 64,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,518.60 : 164,279.20 = 42,990.06 : x
  2. Step 2: Convert to fraction form
    109,518.60/164,279.20 = 42,990.06/x
  3. Step 3: Cross multiply
    109,518.60x = 164,279.20 × 42,990.06
  4. Step 4: Simplify right side
    109,518.60x = 7,062,372,664.75
  5. Step 5: Solve for x
    x = 7,062,372,664.75/109,518.60
  6. Step 6: Final answer
    x = 64,485.60

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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.