Home / 120,313.34-180,407.71-64,138.35

Finding the Fourth Proportional to 120,313.34, 180,407.71 and 64,138.35

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Solution

The fourth proportional to 120,313.34, 180,407.71 and 64,138.35 is: 96,174.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,313.34 : 180,407.71 = 64,138.35 : x
  2. Step 2: Convert to fraction form
    120,313.34/180,407.71 = 64,138.35/x
  3. Step 3: Cross multiply
    120,313.34x = 180,407.71 × 64,138.35
  4. Step 4: Simplify right side
    120,313.34x = 11,571,052,686.33
  5. Step 5: Solve for x
    x = 11,571,052,686.33/120,313.34
  6. Step 6: Final answer
    x = 96,174.32

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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.