Home / 281,019.12-421,693.56-103,649.76

Finding the Fourth Proportional to 281,019.12, 421,693.56 and 103,649.76

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Solution

The fourth proportional to 281,019.12, 421,693.56 and 103,649.76 is: 155,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,019.12 : 421,693.56 = 103,649.76 : x
  2. Step 2: Convert to fraction form
    281,019.12/421,693.56 = 103,649.76/x
  3. Step 3: Cross multiply
    281,019.12x = 421,693.56 × 103,649.76
  4. Step 4: Simplify right side
    281,019.12x = 43,708,436,287.55
  5. Step 5: Solve for x
    x = 43,708,436,287.55/281,019.12
  6. Step 6: Final answer
    x = 155,535.45

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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.