Home / 120,329.98-180,297.69-85,206.58

Finding the Fourth Proportional to 120,329.98, 180,297.69 and 85,206.58

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Solution

The fourth proportional to 120,329.98, 180,297.69 and 85,206.58 is: 127,670.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,329.98 : 180,297.69 = 85,206.58 : x
  2. Step 2: Convert to fraction form
    120,329.98/180,297.69 = 85,206.58/x
  3. Step 3: Cross multiply
    120,329.98x = 180,297.69 × 85,206.58
  4. Step 4: Simplify right side
    120,329.98x = 15,362,549,546.80
  5. Step 5: Solve for x
    x = 15,362,549,546.80/120,329.98
  6. Step 6: Final answer
    x = 127,670.17

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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.