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Finding the Fourth Proportional to 100,980.80, 151,451.36 and 34,424.64

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Solution

The fourth proportional to 100,980.80, 151,451.36 and 34,424.64 is: 51,630.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,980.80 : 151,451.36 = 34,424.64 : x
  2. Step 2: Convert to fraction form
    100,980.80/151,451.36 = 34,424.64/x
  3. Step 3: Cross multiply
    100,980.80x = 151,451.36 × 34,424.64
  4. Step 4: Simplify right side
    100,980.80x = 5,213,658,545.51
  5. Step 5: Solve for x
    x = 5,213,658,545.51/100,980.80
  6. Step 6: Final answer
    x = 51,630.20

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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.