Home / 129,022.63-178,045.13-71,665.64

Finding the Fourth Proportional to 129,022.63, 178,045.13 and 71,665.64

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Solution

The fourth proportional to 129,022.63, 178,045.13 and 71,665.64 is: 98,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,022.63 : 178,045.13 = 71,665.64 : x
  2. Step 2: Convert to fraction form
    129,022.63/178,045.13 = 71,665.64/x
  3. Step 3: Cross multiply
    129,022.63x = 178,045.13 × 71,665.64
  4. Step 4: Simplify right side
    129,022.63x = 12,759,718,190.33
  5. Step 5: Solve for x
    x = 12,759,718,190.33/129,022.63
  6. Step 6: Final answer
    x = 98,895.20

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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.