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Finding the Fourth Proportional to 168,210.16, 251,965.32 and 79,534.60

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Solution

The fourth proportional to 168,210.16, 251,965.32 and 79,534.60 is: 119,136.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,210.16 : 251,965.32 = 79,534.60 : x
  2. Step 2: Convert to fraction form
    168,210.16/251,965.32 = 79,534.60/x
  3. Step 3: Cross multiply
    168,210.16x = 251,965.32 × 79,534.60
  4. Step 4: Simplify right side
    168,210.16x = 20,039,960,940.07
  5. Step 5: Solve for x
    x = 20,039,960,940.07/168,210.16
  6. Step 6: Final answer
    x = 119,136.45

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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.