Home / 120,313.36-180,409.29-70,408.45

Finding the Fourth Proportional to 120,313.36, 180,409.29 and 70,408.45

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Solution

The fourth proportional to 120,313.36, 180,409.29 and 70,408.45 is: 105,577.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,313.36 : 180,409.29 = 70,408.45 : x
  2. Step 2: Convert to fraction form
    120,313.36/180,409.29 = 70,408.45/x
  3. Step 3: Cross multiply
    120,313.36x = 180,409.29 × 70,408.45
  4. Step 4: Simplify right side
    120,313.36x = 12,702,338,474.50
  5. Step 5: Solve for x
    x = 12,702,338,474.50/120,313.36
  6. Step 6: Final answer
    x = 105,577.12

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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.