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Finding the Fourth Proportional to 105,869.80, 158,804.70 and 55,930.60

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Solution

The fourth proportional to 105,869.80, 158,804.70 and 55,930.60 is: 83,895.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,869.80 : 158,804.70 = 55,930.60 : x
  2. Step 2: Convert to fraction form
    105,869.80/158,804.70 = 55,930.60/x
  3. Step 3: Cross multiply
    105,869.80x = 158,804.70 × 55,930.60
  4. Step 4: Simplify right side
    105,869.80x = 8,882,042,153.82
  5. Step 5: Solve for x
    x = 8,882,042,153.82/105,869.80
  6. Step 6: Final answer
    x = 83,895.90

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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.