Home / 128,867.80-193,320.06-40,130.24

Finding the Fourth Proportional to 128,867.80, 193,320.06 and 40,130.24

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Solution

The fourth proportional to 128,867.80, 193,320.06 and 40,130.24 is: 60,201.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,867.80 : 193,320.06 = 40,130.24 : x
  2. Step 2: Convert to fraction form
    128,867.80/193,320.06 = 40,130.24/x
  3. Step 3: Cross multiply
    128,867.80x = 193,320.06 × 40,130.24
  4. Step 4: Simplify right side
    128,867.80x = 7,757,980,404.61
  5. Step 5: Solve for x
    x = 7,757,980,404.61/128,867.80
  6. Step 6: Final answer
    x = 60,201.08

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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.