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Finding the Fourth Proportional to 112,076.40, 168,114.60 and 106,390.20

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Solution

The fourth proportional to 112,076.40, 168,114.60 and 106,390.20 is: 159,585.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,076.40 : 168,114.60 = 106,390.20 : x
  2. Step 2: Convert to fraction form
    112,076.40/168,114.60 = 106,390.20/x
  3. Step 3: Cross multiply
    112,076.40x = 168,114.60 × 106,390.20
  4. Step 4: Simplify right side
    112,076.40x = 17,885,745,916.92
  5. Step 5: Solve for x
    x = 17,885,745,916.92/112,076.40
  6. Step 6: Final answer
    x = 159,585.30

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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.