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Finding the Fourth Proportional to 119,899.60, 180,116.70 and 100,216.60

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Solution

The fourth proportional to 119,899.60, 180,116.70 and 100,216.60 is: 150,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,899.60 : 180,116.70 = 100,216.60 : x
  2. Step 2: Convert to fraction form
    119,899.60/180,116.70 = 100,216.60/x
  3. Step 3: Cross multiply
    119,899.60x = 180,116.70 × 100,216.60
  4. Step 4: Simplify right side
    119,899.60x = 18,050,683,277.22
  5. Step 5: Solve for x
    x = 18,050,683,277.22/119,899.60
  6. Step 6: Final answer
    x = 150,548.32

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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.