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Finding the Fourth Proportional to 122,011.80, 183,017.70 and 102,766.20

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Solution

The fourth proportional to 122,011.80, 183,017.70 and 102,766.20 is: 154,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,011.80 : 183,017.70 = 102,766.20 : x
  2. Step 2: Convert to fraction form
    122,011.80/183,017.70 = 102,766.20/x
  3. Step 3: Cross multiply
    122,011.80x = 183,017.70 × 102,766.20
  4. Step 4: Simplify right side
    122,011.80x = 18,808,033,561.74
  5. Step 5: Solve for x
    x = 18,808,033,561.74/122,011.80
  6. Step 6: Final answer
    x = 154,149.30

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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.