Home / 100,409.01-138,573.39-55,095.81

Finding the Fourth Proportional to 100,409.01, 138,573.39 and 55,095.81

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Solution

The fourth proportional to 100,409.01, 138,573.39 and 55,095.81 is: 76,037.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,409.01 : 138,573.39 = 55,095.81 : x
  2. Step 2: Convert to fraction form
    100,409.01/138,573.39 = 55,095.81/x
  3. Step 3: Cross multiply
    100,409.01x = 138,573.39 × 55,095.81
  4. Step 4: Simplify right side
    100,409.01x = 7,634,813,166.50
  5. Step 5: Solve for x
    x = 7,634,813,166.50/100,409.01
  6. Step 6: Final answer
    x = 76,037.13

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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.