Home / 156,971.82-216,619.95-85,351.89

Finding the Fourth Proportional to 156,971.82, 216,619.95 and 85,351.89

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Solution

The fourth proportional to 156,971.82, 216,619.95 and 85,351.89 is: 117,784.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.82 : 216,619.95 = 85,351.89 : x
  2. Step 2: Convert to fraction form
    156,971.82/216,619.95 = 85,351.89/x
  3. Step 3: Cross multiply
    156,971.82x = 216,619.95 × 85,351.89
  4. Step 4: Simplify right side
    156,971.82x = 18,488,922,144.21
  5. Step 5: Solve for x
    x = 18,488,922,144.21/156,971.82
  6. Step 6: Final answer
    x = 117,784.98

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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.