Home / 236,861.21-326,867.81-129,431.93

Finding the Fourth Proportional to 236,861.21, 326,867.81 and 129,431.93

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Solution

The fourth proportional to 236,861.21, 326,867.81 and 129,431.93 is: 178,615.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,861.21 : 326,867.81 = 129,431.93 : x
  2. Step 2: Convert to fraction form
    236,861.21/326,867.81 = 129,431.93/x
  3. Step 3: Cross multiply
    236,861.21x = 326,867.81 × 129,431.93
  4. Step 4: Simplify right side
    236,861.21x = 42,307,129,221.67
  5. Step 5: Solve for x
    x = 42,307,129,221.67/236,861.21
  6. Step 6: Final answer
    x = 178,615.69

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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.