Home / 100,545.77-138,754.83-55,227.94

Finding the Fourth Proportional to 100,545.77, 138,754.83 and 55,227.94

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Solution

The fourth proportional to 100,545.77, 138,754.83 and 55,227.94 is: 76,215.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,545.77 : 138,754.83 = 55,227.94 : x
  2. Step 2: Convert to fraction form
    100,545.77/138,754.83 = 55,227.94/x
  3. Step 3: Cross multiply
    100,545.77x = 138,754.83 × 55,227.94
  4. Step 4: Simplify right side
    100,545.77x = 7,663,143,079.06
  5. Step 5: Solve for x
    x = 7,663,143,079.06/100,545.77
  6. Step 6: Final answer
    x = 76,215.47

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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.