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Finding the Fourth Proportional to 141,806.62, 195,699 and 81,379.81

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Solution

The fourth proportional to 141,806.62, 195,699 and 81,379.81 is: 112,307.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,806.62 : 195,699 = 81,379.81 : x
  2. Step 2: Convert to fraction form
    141,806.62/195,699 = 81,379.81/x
  3. Step 3: Cross multiply
    141,806.62x = 195,699 × 81,379.81
  4. Step 4: Simplify right side
    141,806.62x = 15,925,947,437.19
  5. Step 5: Solve for x
    x = 15,925,947,437.19/141,806.62
  6. Step 6: Final answer
    x = 112,307.50

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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.