Home / 129,096.74-178,204.29-81,341.21

Finding the Fourth Proportional to 129,096.74, 178,204.29 and 81,341.21

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Solution

The fourth proportional to 129,096.74, 178,204.29 and 81,341.21 is: 112,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,096.74 : 178,204.29 = 81,341.21 : x
  2. Step 2: Convert to fraction form
    129,096.74/178,204.29 = 81,341.21/x
  3. Step 3: Cross multiply
    129,096.74x = 178,204.29 × 81,341.21
  4. Step 4: Simplify right side
    129,096.74x = 14,495,352,575.79
  5. Step 5: Solve for x
    x = 14,495,352,575.79/129,096.74
  6. Step 6: Final answer
    x = 112,282.87

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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.