Home / 136,403.88-188,086.91-93,390.45

Finding the Fourth Proportional to 136,403.88, 188,086.91 and 93,390.45

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Solution

The fourth proportional to 136,403.88, 188,086.91 and 93,390.45 is: 128,775.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,403.88 : 188,086.91 = 93,390.45 : x
  2. Step 2: Convert to fraction form
    136,403.88/188,086.91 = 93,390.45/x
  3. Step 3: Cross multiply
    136,403.88x = 188,086.91 × 93,390.45
  4. Step 4: Simplify right side
    136,403.88x = 17,565,520,697.06
  5. Step 5: Solve for x
    x = 17,565,520,697.06/136,403.88
  6. Step 6: Final answer
    x = 128,775.81

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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.