Home / 129,268.16-178,370.52-72,668.60

Finding the Fourth Proportional to 129,268.16, 178,370.52 and 72,668.60

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Solution

The fourth proportional to 129,268.16, 178,370.52 and 72,668.60 is: 100,271.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,268.16 : 178,370.52 = 72,668.60 : x
  2. Step 2: Convert to fraction form
    129,268.16/178,370.52 = 72,668.60/x
  3. Step 3: Cross multiply
    129,268.16x = 178,370.52 × 72,668.60
  4. Step 4: Simplify right side
    129,268.16x = 12,961,935,969.67
  5. Step 5: Solve for x
    x = 12,961,935,969.67/129,268.16
  6. Step 6: Final answer
    x = 100,271.68

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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.