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Finding the Fourth Proportional to 103,544.80, 155,317.20 and 99,608.20

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Solution

The fourth proportional to 103,544.80, 155,317.20 and 99,608.20 is: 149,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,544.80 : 155,317.20 = 99,608.20 : x
  2. Step 2: Convert to fraction form
    103,544.80/155,317.20 = 99,608.20/x
  3. Step 3: Cross multiply
    103,544.80x = 155,317.20 × 99,608.20
  4. Step 4: Simplify right side
    103,544.80x = 15,470,866,721.04
  5. Step 5: Solve for x
    x = 15,470,866,721.04/103,544.80
  6. Step 6: Final answer
    x = 149,412.30

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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.