Home / 109,478.40-164,222.46-42,912.60

Finding the Fourth Proportional to 109,478.40, 164,222.46 and 42,912.60

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Solution

The fourth proportional to 109,478.40, 164,222.46 and 42,912.60 is: 64,370.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,478.40 : 164,222.46 = 42,912.60 : x
  2. Step 2: Convert to fraction form
    109,478.40/164,222.46 = 42,912.60/x
  3. Step 3: Cross multiply
    109,478.40x = 164,222.46 × 42,912.60
  4. Step 4: Simplify right side
    109,478.40x = 7,047,212,737.00
  5. Step 5: Solve for x
    x = 7,047,212,737.00/109,478.40
  6. Step 6: Final answer
    x = 64,370.80

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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.