Home / 129,270.93-178,419.43-83,885.19

Finding the Fourth Proportional to 129,270.93, 178,419.43 and 83,885.19

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Solution

The fourth proportional to 129,270.93, 178,419.43 and 83,885.19 is: 115,778.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,270.93 : 178,419.43 = 83,885.19 : x
  2. Step 2: Convert to fraction form
    129,270.93/178,419.43 = 83,885.19/x
  3. Step 3: Cross multiply
    129,270.93x = 178,419.43 × 83,885.19
  4. Step 4: Simplify right side
    129,270.93x = 14,966,747,785.24
  5. Step 5: Solve for x
    x = 14,966,747,785.24/129,270.93
  6. Step 6: Final answer
    x = 115,778.14

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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.