Home / 281,085.21-421,657.38-91,560.36

Finding the Fourth Proportional to 281,085.21, 421,657.38 and 91,560.36

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Solution

The fourth proportional to 281,085.21, 421,657.38 and 91,560.36 is: 137,350.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,085.21 : 421,657.38 = 91,560.36 : x
  2. Step 2: Convert to fraction form
    281,085.21/421,657.38 = 91,560.36/x
  3. Step 3: Cross multiply
    281,085.21x = 421,657.38 × 91,560.36
  4. Step 4: Simplify right side
    281,085.21x = 38,607,101,509.46
  5. Step 5: Solve for x
    x = 38,607,101,509.46/281,085.21
  6. Step 6: Final answer
    x = 137,350.17

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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.