Home / 129,701.25-178,987.73-70,085.25

Finding the Fourth Proportional to 129,701.25, 178,987.73 and 70,085.25

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Solution

The fourth proportional to 129,701.25, 178,987.73 and 70,085.25 is: 96,717.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,701.25 : 178,987.73 = 70,085.25 : x
  2. Step 2: Convert to fraction form
    129,701.25/178,987.73 = 70,085.25/x
  3. Step 3: Cross multiply
    129,701.25x = 178,987.73 × 70,085.25
  4. Step 4: Simplify right side
    129,701.25x = 12,544,399,453.56
  5. Step 5: Solve for x
    x = 12,544,399,453.56/129,701.25
  6. Step 6: Final answer
    x = 96,717.65

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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.