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Finding the Fourth Proportional to 144,568.41, 199,626.87 and 90,870.72

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Solution

The fourth proportional to 144,568.41, 199,626.87 and 90,870.72 is: 125,478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,568.41 : 199,626.87 = 90,870.72 : x
  2. Step 2: Convert to fraction form
    144,568.41/199,626.87 = 90,870.72/x
  3. Step 3: Cross multiply
    144,568.41x = 199,626.87 × 90,870.72
  4. Step 4: Simplify right side
    144,568.41x = 18,140,235,955.76
  5. Step 5: Solve for x
    x = 18,140,235,955.76/144,568.41
  6. Step 6: Final answer
    x = 125,478.56

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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.