Home / 101,445.45-139,909.77-76,011.54

Finding the Fourth Proportional to 101,445.45, 139,909.77 and 76,011.54

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Solution

The fourth proportional to 101,445.45, 139,909.77 and 76,011.54 is: 104,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,445.45 : 139,909.77 = 76,011.54 : x
  2. Step 2: Convert to fraction form
    101,445.45/139,909.77 = 76,011.54/x
  3. Step 3: Cross multiply
    101,445.45x = 139,909.77 × 76,011.54
  4. Step 4: Simplify right side
    101,445.45x = 10,634,757,078.75
  5. Step 5: Solve for x
    x = 10,634,757,078.75/101,445.45
  6. Step 6: Final answer
    x = 104,832.27

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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.