Home / 139,608.20-209,412.34-97,570.40

Finding the Fourth Proportional to 139,608.20, 209,412.34 and 97,570.40

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Solution

The fourth proportional to 139,608.20, 209,412.34 and 97,570.40 is: 146,355.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,608.20 : 209,412.34 = 97,570.40 : x
  2. Step 2: Convert to fraction form
    139,608.20/209,412.34 = 97,570.40/x
  3. Step 3: Cross multiply
    139,608.20x = 209,412.34 × 97,570.40
  4. Step 4: Simplify right side
    139,608.20x = 20,432,444,487.75
  5. Step 5: Solve for x
    x = 20,432,444,487.75/139,608.20
  6. Step 6: Final answer
    x = 146,355.62

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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.