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Finding the Fourth Proportional to 105,244.46, 157,891.34 and 71,980.19

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Solution

The fourth proportional to 105,244.46, 157,891.34 and 71,980.19 is: 107,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,244.46 : 157,891.34 = 71,980.19 : x
  2. Step 2: Convert to fraction form
    105,244.46/157,891.34 = 71,980.19/x
  3. Step 3: Cross multiply
    105,244.46x = 157,891.34 × 71,980.19
  4. Step 4: Simplify right side
    105,244.46x = 11,365,048,635.14
  5. Step 5: Solve for x
    x = 11,365,048,635.14/105,244.46
  6. Step 6: Final answer
    x = 107,987.15

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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.