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Finding the Fourth Proportional to 136,173.90, 204,042.15 and 128,300.70

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Solution

The fourth proportional to 136,173.90, 204,042.15 and 128,300.70 is: 192,244.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,173.90 : 204,042.15 = 128,300.70 : x
  2. Step 2: Convert to fraction form
    136,173.90/204,042.15 = 128,300.70/x
  3. Step 3: Cross multiply
    136,173.90x = 204,042.15 × 128,300.70
  4. Step 4: Simplify right side
    136,173.90x = 26,178,750,674.51
  5. Step 5: Solve for x
    x = 26,178,750,674.51/136,173.90
  6. Step 6: Final answer
    x = 192,244.99

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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.