Home / 100,585.26-138,808.60-55,264.18

Finding the Fourth Proportional to 100,585.26, 138,808.60 and 55,264.18

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Solution

The fourth proportional to 100,585.26, 138,808.60 and 55,264.18 is: 76,265.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,585.26 : 138,808.60 = 55,264.18 : x
  2. Step 2: Convert to fraction form
    100,585.26/138,808.60 = 55,264.18/x
  3. Step 3: Cross multiply
    100,585.26x = 138,808.60 × 55,264.18
  4. Step 4: Simplify right side
    100,585.26x = 7,671,143,455.95
  5. Step 5: Solve for x
    x = 7,671,143,455.95/100,585.26
  6. Step 6: Final answer
    x = 76,265.09

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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.