Home / 100,584.18-138,806.20-55,265.06

Finding the Fourth Proportional to 100,584.18, 138,806.20 and 55,265.06

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Solution

The fourth proportional to 100,584.18, 138,806.20 and 55,265.06 is: 76,265.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,584.18 : 138,806.20 = 55,265.06 : x
  2. Step 2: Convert to fraction form
    100,584.18/138,806.20 = 55,265.06/x
  3. Step 3: Cross multiply
    100,584.18x = 138,806.20 × 55,265.06
  4. Step 4: Simplify right side
    100,584.18x = 7,671,132,971.37
  5. Step 5: Solve for x
    x = 7,671,132,971.37/100,584.18
  6. Step 6: Final answer
    x = 76,265.80

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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.