Home / 129,203.24-178,300.64-71,841.94

Finding the Fourth Proportional to 129,203.24, 178,300.64 and 71,841.94

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Solution

The fourth proportional to 129,203.24, 178,300.64 and 71,841.94 is: 99,141.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,203.24 : 178,300.64 = 71,841.94 : x
  2. Step 2: Convert to fraction form
    129,203.24/178,300.64 = 71,841.94/x
  3. Step 3: Cross multiply
    129,203.24x = 178,300.64 × 71,841.94
  4. Step 4: Simplify right side
    129,203.24x = 12,809,463,880.84
  5. Step 5: Solve for x
    x = 12,809,463,880.84/129,203.24
  6. Step 6: Final answer
    x = 99,141.97

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1.5x scale

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.