Home / 125,139.28-187,733.40-55,018.36

Finding the Fourth Proportional to 125,139.28, 187,733.40 and 55,018.36

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Solution

The fourth proportional to 125,139.28, 187,733.40 and 55,018.36 is: 82,538.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,139.28 : 187,733.40 = 55,018.36 : x
  2. Step 2: Convert to fraction form
    125,139.28/187,733.40 = 55,018.36/x
  3. Step 3: Cross multiply
    125,139.28x = 187,733.40 × 55,018.36
  4. Step 4: Simplify right side
    125,139.28x = 10,328,783,785.22
  5. Step 5: Solve for x
    x = 10,328,783,785.22/125,139.28
  6. Step 6: Final answer
    x = 82,538.30

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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.