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Finding the Fourth Proportional to 163,515.20, 245,280.90 and 84,783.20

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Solution

The fourth proportional to 163,515.20, 245,280.90 and 84,783.20 is: 127,179.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,515.20 : 245,280.90 = 84,783.20 : x
  2. Step 2: Convert to fraction form
    163,515.20/245,280.90 = 84,783.20/x
  3. Step 3: Cross multiply
    163,515.20x = 245,280.90 × 84,783.20
  4. Step 4: Simplify right side
    163,515.20x = 20,795,699,600.88
  5. Step 5: Solve for x
    x = 20,795,699,600.88/163,515.20
  6. Step 6: Final answer
    x = 127,179.00

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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.