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Finding the Fourth Proportional to 129,852, 179,196.12 and 70,236

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Solution

The fourth proportional to 129,852, 179,196.12 and 70,236 is: 96,925.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,852 : 179,196.12 = 70,236 : x
  2. Step 2: Convert to fraction form
    129,852/179,196.12 = 70,236/x
  3. Step 3: Cross multiply
    129,852x = 179,196.12 × 70,236
  4. Step 4: Simplify right side
    129,852x = 12,586,018,684.32
  5. Step 5: Solve for x
    x = 12,586,018,684.32/129,852
  6. Step 6: Final answer
    x = 96,925.87

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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.