Home / 128,987.58-193,406.64-50,009.34

Finding the Fourth Proportional to 128,987.58, 193,406.64 and 50,009.34

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Solution

The fourth proportional to 128,987.58, 193,406.64 and 50,009.34 is: 74,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,987.58 : 193,406.64 = 50,009.34 : x
  2. Step 2: Convert to fraction form
    128,987.58/193,406.64 = 50,009.34/x
  3. Step 3: Cross multiply
    128,987.58x = 193,406.64 × 50,009.34
  4. Step 4: Simplify right side
    128,987.58x = 9,672,138,418.02
  5. Step 5: Solve for x
    x = 9,672,138,418.02/128,987.58
  6. Step 6: Final answer
    x = 74,985.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.