Home / 198,721.50-298,168.65-98,981.34

Finding the Fourth Proportional to 198,721.50, 298,168.65 and 98,981.34

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Solution

The fourth proportional to 198,721.50, 298,168.65 and 98,981.34 is: 148,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,721.50 : 298,168.65 = 98,981.34 : x
  2. Step 2: Convert to fraction form
    198,721.50/298,168.65 = 98,981.34/x
  3. Step 3: Cross multiply
    198,721.50x = 298,168.65 × 98,981.34
  4. Step 4: Simplify right side
    198,721.50x = 29,513,132,522.99
  5. Step 5: Solve for x
    x = 29,513,132,522.99/198,721.50
  6. Step 6: Final answer
    x = 148,515.05

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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.