Home / 140,217.30-210,544.65-81,168.30

Finding the Fourth Proportional to 140,217.30, 210,544.65 and 81,168.30

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Solution

The fourth proportional to 140,217.30, 210,544.65 and 81,168.30 is: 121,879.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,217.30 : 210,544.65 = 81,168.30 : x
  2. Step 2: Convert to fraction form
    140,217.30/210,544.65 = 81,168.30/x
  3. Step 3: Cross multiply
    140,217.30x = 210,544.65 × 81,168.30
  4. Step 4: Simplify right side
    140,217.30x = 17,089,551,314.60
  5. Step 5: Solve for x
    x = 17,089,551,314.60/140,217.30
  6. Step 6: Final answer
    x = 121,879.05

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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.