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Finding the Fourth Proportional to 111,153.80, 166,730.70 and 28,047.80

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Solution

The fourth proportional to 111,153.80, 166,730.70 and 28,047.80 is: 42,071.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,153.80 : 166,730.70 = 28,047.80 : x
  2. Step 2: Convert to fraction form
    111,153.80/166,730.70 = 28,047.80/x
  3. Step 3: Cross multiply
    111,153.80x = 166,730.70 × 28,047.80
  4. Step 4: Simplify right side
    111,153.80x = 4,676,429,327.46
  5. Step 5: Solve for x
    x = 4,676,429,327.46/111,153.80
  6. Step 6: Final answer
    x = 42,071.70

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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.