Home / 136,745.37-188,727.63-76,319.90

Finding the Fourth Proportional to 136,745.37, 188,727.63 and 76,319.90

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Solution

The fourth proportional to 136,745.37, 188,727.63 and 76,319.90 is: 105,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,745.37 : 188,727.63 = 76,319.90 : x
  2. Step 2: Convert to fraction form
    136,745.37/188,727.63 = 76,319.90/x
  3. Step 3: Cross multiply
    136,745.37x = 188,727.63 × 76,319.90
  4. Step 4: Simplify right side
    136,745.37x = 14,403,673,848.84
  5. Step 5: Solve for x
    x = 14,403,673,848.84/136,745.37
  6. Step 6: Final answer
    x = 105,332.08

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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.