Home / 112,383.87-155,018.55-85,467.38

Finding the Fourth Proportional to 112,383.87, 155,018.55 and 85,467.38

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Solution

The fourth proportional to 112,383.87, 155,018.55 and 85,467.38 is: 117,890.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,383.87 : 155,018.55 = 85,467.38 : x
  2. Step 2: Convert to fraction form
    112,383.87/155,018.55 = 85,467.38/x
  3. Step 3: Cross multiply
    112,383.87x = 155,018.55 × 85,467.38
  4. Step 4: Simplify right side
    112,383.87x = 13,249,028,544.81
  5. Step 5: Solve for x
    x = 13,249,028,544.81/112,383.87
  6. Step 6: Final answer
    x = 117,890.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.