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Finding the Fourth Proportional to 207,187.30, 310,661.88 and 100,534.60

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Solution

The fourth proportional to 207,187.30, 310,661.88 and 100,534.60 is: 150,744.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,187.30 : 310,661.88 = 100,534.60 : x
  2. Step 2: Convert to fraction form
    207,187.30/310,661.88 = 100,534.60/x
  3. Step 3: Cross multiply
    207,187.30x = 310,661.88 × 100,534.60
  4. Step 4: Simplify right side
    207,187.30x = 31,232,267,841.05
  5. Step 5: Solve for x
    x = 31,232,267,841.05/207,187.30
  6. Step 6: Final answer
    x = 150,744.12

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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.