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Finding the Fourth Proportional to 163,988.20, 245,636.70 and 136,340.20

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Solution

The fourth proportional to 163,988.20, 245,636.70 and 136,340.20 is: 204,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,988.20 : 245,636.70 = 136,340.20 : x
  2. Step 2: Convert to fraction form
    163,988.20/245,636.70 = 136,340.20/x
  3. Step 3: Cross multiply
    163,988.20x = 245,636.70 × 136,340.20
  4. Step 4: Simplify right side
    163,988.20x = 33,490,156,805.34
  5. Step 5: Solve for x
    x = 33,490,156,805.34/163,988.20
  6. Step 6: Final answer
    x = 204,222.97

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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.