Home / 156,629.47-216,148.88-85,009.49

Finding the Fourth Proportional to 156,629.47, 216,148.88 and 85,009.49

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Solution

The fourth proportional to 156,629.47, 216,148.88 and 85,009.49 is: 117,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,629.47 : 216,148.88 = 85,009.49 : x
  2. Step 2: Convert to fraction form
    156,629.47/216,148.88 = 85,009.49/x
  3. Step 3: Cross multiply
    156,629.47x = 216,148.88 × 85,009.49
  4. Step 4: Simplify right side
    156,629.47x = 18,374,706,052.87
  5. Step 5: Solve for x
    x = 18,374,706,052.87/156,629.47
  6. Step 6: Final answer
    x = 117,313.21

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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.