Home / 129,010.33-178,028.35-71,653.32

Finding the Fourth Proportional to 129,010.33, 178,028.35 and 71,653.32

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Solution

The fourth proportional to 129,010.33, 178,028.35 and 71,653.32 is: 98,878.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,010.33 : 178,028.35 = 71,653.32 : x
  2. Step 2: Convert to fraction form
    129,010.33/178,028.35 = 71,653.32/x
  3. Step 3: Cross multiply
    129,010.33x = 178,028.35 × 71,653.32
  4. Step 4: Simplify right side
    129,010.33x = 12,756,322,152.49
  5. Step 5: Solve for x
    x = 12,756,322,152.49/129,010.33
  6. Step 6: Final answer
    x = 98,878.30

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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.