Home / 129,530.62-178,752.63-75,093.40

Finding the Fourth Proportional to 129,530.62, 178,752.63 and 75,093.40

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Solution

The fourth proportional to 129,530.62, 178,752.63 and 75,093.40 is: 103,629.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,530.62 : 178,752.63 = 75,093.40 : x
  2. Step 2: Convert to fraction form
    129,530.62/178,752.63 = 75,093.40/x
  3. Step 3: Cross multiply
    129,530.62x = 178,752.63 × 75,093.40
  4. Step 4: Simplify right side
    129,530.62x = 13,423,142,745.64
  5. Step 5: Solve for x
    x = 13,423,142,745.64/129,530.62
  6. Step 6: Final answer
    x = 103,629.11

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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.