Home / 445,385.40-668,078.10-112,961.40

Finding the Fourth Proportional to 445,385.40, 668,078.10 and 112,961.40

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Solution

The fourth proportional to 445,385.40, 668,078.10 and 112,961.40 is: 169,442.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,385.40 : 668,078.10 = 112,961.40 : x
  2. Step 2: Convert to fraction form
    445,385.40/668,078.10 = 112,961.40/x
  3. Step 3: Cross multiply
    445,385.40x = 668,078.10 × 112,961.40
  4. Step 4: Simplify right side
    445,385.40x = 75,467,037,485.34
  5. Step 5: Solve for x
    x = 75,467,037,485.34/445,385.40
  6. Step 6: Final answer
    x = 169,442.10

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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.