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Finding the Fourth Proportional to 183,730.80, 274,981.80 and 128,434.80

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Solution

The fourth proportional to 183,730.80, 274,981.80 and 128,434.80 is: 192,222.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,730.80 : 274,981.80 = 128,434.80 : x
  2. Step 2: Convert to fraction form
    183,730.80/274,981.80 = 128,434.80/x
  3. Step 3: Cross multiply
    183,730.80x = 274,981.80 × 128,434.80
  4. Step 4: Simplify right side
    183,730.80x = 35,317,232,486.64
  5. Step 5: Solve for x
    x = 35,317,232,486.64/183,730.80
  6. Step 6: Final answer
    x = 192,222.71

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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.