Home / 120,313.43-180,407.84-64,138.45

Finding the Fourth Proportional to 120,313.43, 180,407.84 and 64,138.45

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Solution

The fourth proportional to 120,313.43, 180,407.84 and 64,138.45 is: 96,174.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,313.43 : 180,407.84 = 64,138.45 : x
  2. Step 2: Convert to fraction form
    120,313.43/180,407.84 = 64,138.45/x
  3. Step 3: Cross multiply
    120,313.43x = 180,407.84 × 64,138.45
  4. Step 4: Simplify right side
    120,313.43x = 11,571,078,934.77
  5. Step 5: Solve for x
    x = 11,571,078,934.77/120,313.43
  6. Step 6: Final answer
    x = 96,174.46

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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.