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Finding the Fourth Proportional to 103,662.16, 155,290.12 and 53,775.06

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Solution

The fourth proportional to 103,662.16, 155,290.12 and 53,775.06 is: 80,557.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,662.16 : 155,290.12 = 53,775.06 : x
  2. Step 2: Convert to fraction form
    103,662.16/155,290.12 = 53,775.06/x
  3. Step 3: Cross multiply
    103,662.16x = 155,290.12 × 53,775.06
  4. Step 4: Simplify right side
    103,662.16x = 8,350,735,520.41
  5. Step 5: Solve for x
    x = 8,350,735,520.41/103,662.16
  6. Step 6: Final answer
    x = 80,557.22

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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.