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Finding the Fourth Proportional to 122,788.40, 183,923.40 and 102,052.40

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Solution

The fourth proportional to 122,788.40, 183,923.40 and 102,052.40 is: 152,863.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,788.40 : 183,923.40 = 102,052.40 : x
  2. Step 2: Convert to fraction form
    122,788.40/183,923.40 = 102,052.40/x
  3. Step 3: Cross multiply
    122,788.40x = 183,923.40 × 102,052.40
  4. Step 4: Simplify right side
    122,788.40x = 18,769,824,386.16
  5. Step 5: Solve for x
    x = 18,769,824,386.16/122,788.40
  6. Step 6: Final answer
    x = 152,863.17

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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.