Home / 129,837.84-194,855.28-87,618

Finding the Fourth Proportional to 129,837.84, 194,855.28 and 87,618

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Solution

The fourth proportional to 129,837.84, 194,855.28 and 87,618 is: 131,493.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,837.84 : 194,855.28 = 87,618 : x
  2. Step 2: Convert to fraction form
    129,837.84/194,855.28 = 87,618/x
  3. Step 3: Cross multiply
    129,837.84x = 194,855.28 × 87,618
  4. Step 4: Simplify right side
    129,837.84x = 17,072,829,923.04
  5. Step 5: Solve for x
    x = 17,072,829,923.04/129,837.84
  6. Step 6: Final answer
    x = 131,493.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.