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Finding the Fourth Proportional to 163,939.20, 245,908.80 and 161,606.40

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Solution

The fourth proportional to 163,939.20, 245,908.80 and 161,606.40 is: 242,409.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,939.20 : 245,908.80 = 161,606.40 : x
  2. Step 2: Convert to fraction form
    163,939.20/245,908.80 = 161,606.40/x
  3. Step 3: Cross multiply
    163,939.20x = 245,908.80 × 161,606.40
  4. Step 4: Simplify right side
    163,939.20x = 39,740,435,896.32
  5. Step 5: Solve for x
    x = 39,740,435,896.32/163,939.20
  6. Step 6: Final answer
    x = 242,409.60

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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.