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Finding the Fourth Proportional to 201,095.92, 277,409.68 and 128,422.40

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Solution

The fourth proportional to 201,095.92, 277,409.68 and 128,422.40 is: 177,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,095.92 : 277,409.68 = 128,422.40 : x
  2. Step 2: Convert to fraction form
    201,095.92/277,409.68 = 128,422.40/x
  3. Step 3: Cross multiply
    201,095.92x = 277,409.68 × 128,422.40
  4. Step 4: Simplify right side
    201,095.92x = 35,625,616,888.83
  5. Step 5: Solve for x
    x = 35,625,616,888.83/201,095.92
  6. Step 6: Final answer
    x = 177,157.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.