Home / 154,128.75-231,193.14-43,320.75

Finding the Fourth Proportional to 154,128.75, 231,193.14 and 43,320.75

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Solution

The fourth proportional to 154,128.75, 231,193.14 and 43,320.75 is: 64,981.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,128.75 : 231,193.14 = 43,320.75 : x
  2. Step 2: Convert to fraction form
    154,128.75/231,193.14 = 43,320.75/x
  3. Step 3: Cross multiply
    154,128.75x = 231,193.14 × 43,320.75
  4. Step 4: Simplify right side
    154,128.75x = 10,015,460,219.66
  5. Step 5: Solve for x
    x = 10,015,460,219.66/154,128.75
  6. Step 6: Final answer
    x = 64,981.13

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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.