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Finding the Fourth Proportional to 129,852, 179,195.76 and 70,236

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Solution

The fourth proportional to 129,852, 179,195.76 and 70,236 is: 96,925.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,852 : 179,195.76 = 70,236 : x
  2. Step 2: Convert to fraction form
    129,852/179,195.76 = 70,236/x
  3. Step 3: Cross multiply
    129,852x = 179,195.76 × 70,236
  4. Step 4: Simplify right side
    129,852x = 12,585,993,399.36
  5. Step 5: Solve for x
    x = 12,585,993,399.36/129,852
  6. Step 6: Final answer
    x = 96,925.68

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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.