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Finding the Fourth Proportional to 136,934.40, 205,401.60 and 63,206.40

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Solution

The fourth proportional to 136,934.40, 205,401.60 and 63,206.40 is: 94,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,934.40 : 205,401.60 = 63,206.40 : x
  2. Step 2: Convert to fraction form
    136,934.40/205,401.60 = 63,206.40/x
  3. Step 3: Cross multiply
    136,934.40x = 205,401.60 × 63,206.40
  4. Step 4: Simplify right side
    136,934.40x = 12,982,695,690.24
  5. Step 5: Solve for x
    x = 12,982,695,690.24/136,934.40
  6. Step 6: Final answer
    x = 94,809.60

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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.