Home / 112,309.49-154,983.01-61,321.28

Finding the Fourth Proportional to 112,309.49, 154,983.01 and 61,321.28

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Solution

The fourth proportional to 112,309.49, 154,983.01 and 61,321.28 is: 84,621.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,309.49 : 154,983.01 = 61,321.28 : x
  2. Step 2: Convert to fraction form
    112,309.49/154,983.01 = 61,321.28/x
  3. Step 3: Cross multiply
    112,309.49x = 154,983.01 × 61,321.28
  4. Step 4: Simplify right side
    112,309.49x = 9,503,756,551.45
  5. Step 5: Solve for x
    x = 9,503,756,551.45/112,309.49
  6. Step 6: Final answer
    x = 84,621.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.