Home / 100,485.20-138,683.92-60,200.64

Finding the Fourth Proportional to 100,485.20, 138,683.92 and 60,200.64

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Solution

The fourth proportional to 100,485.20, 138,683.92 and 60,200.64 is: 83,085.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,485.20 : 138,683.92 = 60,200.64 : x
  2. Step 2: Convert to fraction form
    100,485.20/138,683.92 = 60,200.64/x
  3. Step 3: Cross multiply
    100,485.20x = 138,683.92 × 60,200.64
  4. Step 4: Simplify right side
    100,485.20x = 8,348,860,741.71
  5. Step 5: Solve for x
    x = 8,348,860,741.71/100,485.20
  6. Step 6: Final answer
    x = 83,085.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.