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Finding the Fourth Proportional to 129,825, 179,159.04 and 70,209

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Solution

The fourth proportional to 129,825, 179,159.04 and 70,209 is: 96,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,825 : 179,159.04 = 70,209 : x
  2. Step 2: Convert to fraction form
    129,825/179,159.04 = 70,209/x
  3. Step 3: Cross multiply
    129,825x = 179,159.04 × 70,209
  4. Step 4: Simplify right side
    129,825x = 12,578,577,039.36
  5. Step 5: Solve for x
    x = 12,578,577,039.36/129,825
  6. Step 6: Final answer
    x = 96,888.71

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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.