Home / 210,378.54-315,570.60-70,137.21

Finding the Fourth Proportional to 210,378.54, 315,570.60 and 70,137.21

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Solution

The fourth proportional to 210,378.54, 315,570.60 and 70,137.21 is: 105,206.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,378.54 : 315,570.60 = 70,137.21 : x
  2. Step 2: Convert to fraction form
    210,378.54/315,570.60 = 70,137.21/x
  3. Step 3: Cross multiply
    210,378.54x = 315,570.60 × 70,137.21
  4. Step 4: Simplify right side
    210,378.54x = 22,133,241,442.03
  5. Step 5: Solve for x
    x = 22,133,241,442.03/210,378.54
  6. Step 6: Final answer
    x = 105,206.75

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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.