Home / 120,054.15-180,019.53-70,231.59

Finding the Fourth Proportional to 120,054.15, 180,019.53 and 70,231.59

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Solution

The fourth proportional to 120,054.15, 180,019.53 and 70,231.59 is: 105,311.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,054.15 : 180,019.53 = 70,231.59 : x
  2. Step 2: Convert to fraction form
    120,054.15/180,019.53 = 70,231.59/x
  3. Step 3: Cross multiply
    120,054.15x = 180,019.53 × 70,231.59
  4. Step 4: Simplify right side
    120,054.15x = 12,643,057,822.95
  5. Step 5: Solve for x
    x = 12,643,057,822.95/120,054.15
  6. Step 6: Final answer
    x = 105,311.29

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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.