Home / 129,293.01-178,426.53-71,936.91

Finding the Fourth Proportional to 129,293.01, 178,426.53 and 71,936.91

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Solution

The fourth proportional to 129,293.01, 178,426.53 and 71,936.91 is: 99,274.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,293.01 : 178,426.53 = 71,936.91 : x
  2. Step 2: Convert to fraction form
    129,293.01/178,426.53 = 71,936.91/x
  3. Step 3: Cross multiply
    129,293.01x = 178,426.53 × 71,936.91
  4. Step 4: Simplify right side
    129,293.01x = 12,835,453,230.22
  5. Step 5: Solve for x
    x = 12,835,453,230.22/129,293.01
  6. Step 6: Final answer
    x = 99,274.15

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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.