Home / 70,152.39-105,244.16-20,228.60

Finding the Fourth Proportional to 70,152.39, 105,244.16 and 20,228.60

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Solution

The fourth proportional to 70,152.39, 105,244.16 and 20,228.60 is: 30,347.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,152.39 : 105,244.16 = 20,228.60 : x
  2. Step 2: Convert to fraction form
    70,152.39/105,244.16 = 20,228.60/x
  3. Step 3: Cross multiply
    70,152.39x = 105,244.16 × 20,228.60
  4. Step 4: Simplify right side
    70,152.39x = 2,128,942,014.98
  5. Step 5: Solve for x
    x = 2,128,942,014.98/70,152.39
  6. Step 6: Final answer
    x = 30,347.39

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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.