Home / 100,461.12-138,637.04-58,019.52

Finding the Fourth Proportional to 100,461.12, 138,637.04 and 58,019.52

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Solution

The fourth proportional to 100,461.12, 138,637.04 and 58,019.52 is: 80,067.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,461.12 : 138,637.04 = 58,019.52 : x
  2. Step 2: Convert to fraction form
    100,461.12/138,637.04 = 58,019.52/x
  3. Step 3: Cross multiply
    100,461.12x = 138,637.04 × 58,019.52
  4. Step 4: Simplify right side
    100,461.12x = 8,043,654,515.02
  5. Step 5: Solve for x
    x = 8,043,654,515.02/100,461.12
  6. Step 6: Final answer
    x = 80,067.34

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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.