Home / 129,381.01-178,530.24-72,005.98

Finding the Fourth Proportional to 129,381.01, 178,530.24 and 72,005.98

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Solution

The fourth proportional to 129,381.01, 178,530.24 and 72,005.98 is: 99,359.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,381.01 : 178,530.24 = 72,005.98 : x
  2. Step 2: Convert to fraction form
    129,381.01/178,530.24 = 72,005.98/x
  3. Step 3: Cross multiply
    129,381.01x = 178,530.24 × 72,005.98
  4. Step 4: Simplify right side
    129,381.01x = 12,855,244,890.84
  5. Step 5: Solve for x
    x = 12,855,244,890.84/129,381.01
  6. Step 6: Final answer
    x = 99,359.60

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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.