Home / 129,014.09-178,033.52-71,657.07

Finding the Fourth Proportional to 129,014.09, 178,033.52 and 71,657.07

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Solution

The fourth proportional to 129,014.09, 178,033.52 and 71,657.07 is: 98,883.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,014.09 : 178,033.52 = 71,657.07 : x
  2. Step 2: Convert to fraction form
    129,014.09/178,033.52 = 71,657.07/x
  3. Step 3: Cross multiply
    129,014.09x = 178,033.52 × 71,657.07
  4. Step 4: Simplify right side
    129,014.09x = 12,757,360,046.70
  5. Step 5: Solve for x
    x = 12,757,360,046.70/129,014.09
  6. Step 6: Final answer
    x = 98,883.47

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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.