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Finding the Fourth Proportional to 112,443.80, 168,665.70 and 106,320.20

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Solution

The fourth proportional to 112,443.80, 168,665.70 and 106,320.20 is: 159,480.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,443.80 : 168,665.70 = 106,320.20 : x
  2. Step 2: Convert to fraction form
    112,443.80/168,665.70 = 106,320.20/x
  3. Step 3: Cross multiply
    112,443.80x = 168,665.70 × 106,320.20
  4. Step 4: Simplify right side
    112,443.80x = 17,932,570,957.14
  5. Step 5: Solve for x
    x = 17,932,570,957.14/112,443.80
  6. Step 6: Final answer
    x = 159,480.30

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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.