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Finding the Fourth Proportional to 280,069.10, 420,103.65 and 93,080.60

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Solution

The fourth proportional to 280,069.10, 420,103.65 and 93,080.60 is: 139,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,069.10 : 420,103.65 = 93,080.60 : x
  2. Step 2: Convert to fraction form
    280,069.10/420,103.65 = 93,080.60/x
  3. Step 3: Cross multiply
    280,069.10x = 420,103.65 × 93,080.60
  4. Step 4: Simplify right side
    280,069.10x = 39,103,499,804.19
  5. Step 5: Solve for x
    x = 39,103,499,804.19/280,069.10
  6. Step 6: Final answer
    x = 139,620.90

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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.