Home / 120,203.15-180,242.55-70,297.83

Finding the Fourth Proportional to 120,203.15, 180,242.55 and 70,297.83

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Solution

The fourth proportional to 120,203.15, 180,242.55 and 70,297.83 is: 105,410.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,203.15 : 180,242.55 = 70,297.83 : x
  2. Step 2: Convert to fraction form
    120,203.15/180,242.55 = 70,297.83/x
  3. Step 3: Cross multiply
    120,203.15x = 180,242.55 × 70,297.83
  4. Step 4: Simplify right side
    120,203.15x = 12,670,660,138.67
  5. Step 5: Solve for x
    x = 12,670,660,138.67/120,203.15
  6. Step 6: Final answer
    x = 105,410.39

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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.