Home / 209,274.71-313,905.12-90,946.17

Finding the Fourth Proportional to 209,274.71, 313,905.12 and 90,946.17

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Solution

The fourth proportional to 209,274.71, 313,905.12 and 90,946.17 is: 136,416.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,274.71 : 313,905.12 = 90,946.17 : x
  2. Step 2: Convert to fraction form
    209,274.71/313,905.12 = 90,946.17/x
  3. Step 3: Cross multiply
    209,274.71x = 313,905.12 × 90,946.17
  4. Step 4: Simplify right side
    209,274.71x = 28,548,467,695.06
  5. Step 5: Solve for x
    x = 28,548,467,695.06/209,274.71
  6. Step 6: Final answer
    x = 136,416.23

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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.