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Finding the Fourth Proportional to 165,510.80, 248,266.20 and 103,216.40

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Solution

The fourth proportional to 165,510.80, 248,266.20 and 103,216.40 is: 154,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,510.80 : 248,266.20 = 103,216.40 : x
  2. Step 2: Convert to fraction form
    165,510.80/248,266.20 = 103,216.40/x
  3. Step 3: Cross multiply
    165,510.80x = 248,266.20 × 103,216.40
  4. Step 4: Simplify right side
    165,510.80x = 25,625,143,405.68
  5. Step 5: Solve for x
    x = 25,625,143,405.68/165,510.80
  6. Step 6: Final answer
    x = 154,824.60

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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.