Home / 120,314.36-180,410.79-70,409.45

Finding the Fourth Proportional to 120,314.36, 180,410.79 and 70,409.45

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Solution

The fourth proportional to 120,314.36, 180,410.79 and 70,409.45 is: 105,578.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,314.36 : 180,410.79 = 70,409.45 : x
  2. Step 2: Convert to fraction form
    120,314.36/180,410.79 = 70,409.45/x
  3. Step 3: Cross multiply
    120,314.36x = 180,410.79 × 70,409.45
  4. Step 4: Simplify right side
    120,314.36x = 12,702,624,497.97
  5. Step 5: Solve for x
    x = 12,702,624,497.97/120,314.36
  6. Step 6: Final answer
    x = 105,578.62

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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.