Home / 129,715.47-194,467.55-87,064.88

Finding the Fourth Proportional to 129,715.47, 194,467.55 and 87,064.88

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Solution

The fourth proportional to 129,715.47, 194,467.55 and 87,064.88 is: 130,526.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,715.47 : 194,467.55 = 87,064.88 : x
  2. Step 2: Convert to fraction form
    129,715.47/194,467.55 = 87,064.88/x
  3. Step 3: Cross multiply
    129,715.47x = 194,467.55 × 87,064.88
  4. Step 4: Simplify right side
    129,715.47x = 16,931,292,496.98
  5. Step 5: Solve for x
    x = 16,931,292,496.98/129,715.47
  6. Step 6: Final answer
    x = 130,526.39

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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.