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Finding the Fourth Proportional to 103,210.60, 154,815.90 and 63,812.20

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Solution

The fourth proportional to 103,210.60, 154,815.90 and 63,812.20 is: 95,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,210.60 : 154,815.90 = 63,812.20 : x
  2. Step 2: Convert to fraction form
    103,210.60/154,815.90 = 63,812.20/x
  3. Step 3: Cross multiply
    103,210.60x = 154,815.90 × 63,812.20
  4. Step 4: Simplify right side
    103,210.60x = 9,879,143,173.98
  5. Step 5: Solve for x
    x = 9,879,143,173.98/103,210.60
  6. Step 6: Final answer
    x = 95,718.30

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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.