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Finding the Fourth Proportional to 122,718.40, 183,818.40 and 101,982.40

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Solution

The fourth proportional to 122,718.40, 183,818.40 and 101,982.40 is: 152,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,718.40 : 183,818.40 = 101,982.40 : x
  2. Step 2: Convert to fraction form
    122,718.40/183,818.40 = 101,982.40/x
  3. Step 3: Cross multiply
    122,718.40x = 183,818.40 × 101,982.40
  4. Step 4: Simplify right side
    122,718.40x = 18,746,241,596.16
  5. Step 5: Solve for x
    x = 18,746,241,596.16/122,718.40
  6. Step 6: Final answer
    x = 152,758.20

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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.