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Finding the Fourth Proportional to 163,393.60, 245,090.40 and 69,908.80

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Solution

The fourth proportional to 163,393.60, 245,090.40 and 69,908.80 is: 104,863.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,393.60 : 245,090.40 = 69,908.80 : x
  2. Step 2: Convert to fraction form
    163,393.60/245,090.40 = 69,908.80/x
  3. Step 3: Cross multiply
    163,393.60x = 245,090.40 × 69,908.80
  4. Step 4: Simplify right side
    163,393.60x = 17,133,975,755.52
  5. Step 5: Solve for x
    x = 17,133,975,755.52/163,393.60
  6. Step 6: Final answer
    x = 104,863.20

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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.