Home / 120,014.40-180,065.28-70,137.84

Finding the Fourth Proportional to 120,014.40, 180,065.28 and 70,137.84

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Solution

The fourth proportional to 120,014.40, 180,065.28 and 70,137.84 is: 105,232.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,014.40 : 180,065.28 = 70,137.84 : x
  2. Step 2: Convert to fraction form
    120,014.40/180,065.28 = 70,137.84/x
  3. Step 3: Cross multiply
    120,014.40x = 180,065.28 × 70,137.84
  4. Step 4: Simplify right side
    120,014.40x = 12,629,389,798.20
  5. Step 5: Solve for x
    x = 12,629,389,798.20/120,014.40
  6. Step 6: Final answer
    x = 105,232.29

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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.