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Finding the Fourth Proportional to 111,990.40, 168,034.20 and 56,586.40

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Solution

The fourth proportional to 111,990.40, 168,034.20 and 56,586.40 is: 84,904.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,990.40 : 168,034.20 = 56,586.40 : x
  2. Step 2: Convert to fraction form
    111,990.40/168,034.20 = 56,586.40/x
  3. Step 3: Cross multiply
    111,990.40x = 168,034.20 × 56,586.40
  4. Step 4: Simplify right side
    111,990.40x = 9,508,450,454.88
  5. Step 5: Solve for x
    x = 9,508,450,454.88/111,990.40
  6. Step 6: Final answer
    x = 84,904.16

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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.