Home / 112,371.20-155,072.78-61,384.64

Finding the Fourth Proportional to 112,371.20, 155,072.78 and 61,384.64

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Solution

The fourth proportional to 112,371.20, 155,072.78 and 61,384.64 is: 84,711.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,371.20 : 155,072.78 = 61,384.64 : x
  2. Step 2: Convert to fraction form
    112,371.20/155,072.78 = 61,384.64/x
  3. Step 3: Cross multiply
    112,371.20x = 155,072.78 × 61,384.64
  4. Step 4: Simplify right side
    112,371.20x = 9,519,086,774.10
  5. Step 5: Solve for x
    x = 9,519,086,774.10/112,371.20
  6. Step 6: Final answer
    x = 84,711.09

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1.5x scale

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.