Home / 129,864.72-179,184.84-84,537.84

Finding the Fourth Proportional to 129,864.72, 179,184.84 and 84,537.84

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Solution

The fourth proportional to 129,864.72, 179,184.84 and 84,537.84 is: 116,643.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,864.72 : 179,184.84 = 84,537.84 : x
  2. Step 2: Convert to fraction form
    129,864.72/179,184.84 = 84,537.84/x
  3. Step 3: Cross multiply
    129,864.72x = 179,184.84 × 84,537.84
  4. Step 4: Simplify right side
    129,864.72x = 15,147,899,334.35
  5. Step 5: Solve for x
    x = 15,147,899,334.35/129,864.72
  6. Step 6: Final answer
    x = 116,643.68

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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.