Home / 100,856.18-139,180.38-55,533.22

Finding the Fourth Proportional to 100,856.18, 139,180.38 and 55,533.22

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Solution

The fourth proportional to 100,856.18, 139,180.38 and 55,533.22 is: 76,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,856.18 : 139,180.38 = 55,533.22 : x
  2. Step 2: Convert to fraction form
    100,856.18/139,180.38 = 55,533.22/x
  3. Step 3: Cross multiply
    100,856.18x = 139,180.38 × 55,533.22
  4. Step 4: Simplify right side
    100,856.18x = 7,729,133,966.32
  5. Step 5: Solve for x
    x = 7,729,133,966.32/100,856.18
  6. Step 6: Final answer
    x = 76,635.20

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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.