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Finding the Fourth Proportional to 107,111, 147,751.62 and 66,805.40

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Solution

The fourth proportional to 107,111, 147,751.62 and 66,805.40 is: 92,153.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,111 : 147,751.62 = 66,805.40 : x
  2. Step 2: Convert to fraction form
    107,111/147,751.62 = 66,805.40/x
  3. Step 3: Cross multiply
    107,111x = 147,751.62 × 66,805.40
  4. Step 4: Simplify right side
    107,111x = 9,870,606,074.75
  5. Step 5: Solve for x
    x = 9,870,606,074.75/107,111
  6. Step 6: Final answer
    x = 92,153.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.