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Finding the Fourth Proportional to 103,240.94, 154,828.60 and 70,173.50

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Solution

The fourth proportional to 103,240.94, 154,828.60 and 70,173.50 is: 105,237.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,240.94 : 154,828.60 = 70,173.50 : x
  2. Step 2: Convert to fraction form
    103,240.94/154,828.60 = 70,173.50/x
  3. Step 3: Cross multiply
    103,240.94x = 154,828.60 × 70,173.50
  4. Step 4: Simplify right side
    103,240.94x = 10,864,863,637.09
  5. Step 5: Solve for x
    x = 10,864,863,637.09/103,240.94
  6. Step 6: Final answer
    x = 105,237.94

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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.