Home / 102,003.93-140,762.68-56,680.79

Finding the Fourth Proportional to 102,003.93, 140,762.68 and 56,680.79

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Solution

The fourth proportional to 102,003.93, 140,762.68 and 56,680.79 is: 78,217.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,003.93 : 140,762.68 = 56,680.79 : x
  2. Step 2: Convert to fraction form
    102,003.93/140,762.68 = 56,680.79/x
  3. Step 3: Cross multiply
    102,003.93x = 140,762.68 × 56,680.79
  4. Step 4: Simplify right side
    102,003.93x = 7,978,539,059.40
  5. Step 5: Solve for x
    x = 7,978,539,059.40/102,003.93
  6. Step 6: Final answer
    x = 78,217.96

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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.