Home / 112,278.36-154,943.82-61,977

Finding the Fourth Proportional to 112,278.36, 154,943.82 and 61,977

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Solution

The fourth proportional to 112,278.36, 154,943.82 and 61,977 is: 85,528.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,278.36 : 154,943.82 = 61,977 : x
  2. Step 2: Convert to fraction form
    112,278.36/154,943.82 = 61,977/x
  3. Step 3: Cross multiply
    112,278.36x = 154,943.82 × 61,977
  4. Step 4: Simplify right side
    112,278.36x = 9,602,953,132.14
  5. Step 5: Solve for x
    x = 9,602,953,132.14/112,278.36
  6. Step 6: Final answer
    x = 85,528.09

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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.