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Finding the Fourth Proportional to 109,219.20, 163,699.20 and 56,601.60

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Solution

The fourth proportional to 109,219.20, 163,699.20 and 56,601.60 is: 84,835.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,219.20 : 163,699.20 = 56,601.60 : x
  2. Step 2: Convert to fraction form
    109,219.20/163,699.20 = 56,601.60/x
  3. Step 3: Cross multiply
    109,219.20x = 163,699.20 × 56,601.60
  4. Step 4: Simplify right side
    109,219.20x = 9,265,636,638.72
  5. Step 5: Solve for x
    x = 9,265,636,638.72/109,219.20
  6. Step 6: Final answer
    x = 84,835.24

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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.