Home / 129,585.00-178,829.09-72,222.72

Finding the Fourth Proportional to 129,585.00, 178,829.09 and 72,222.72

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Solution

The fourth proportional to 129,585.00, 178,829.09 and 72,222.72 is: 99,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,585.00 : 178,829.09 = 72,222.72 : x
  2. Step 2: Convert to fraction form
    129,585.00/178,829.09 = 72,222.72/x
  3. Step 3: Cross multiply
    129,585.00x = 178,829.09 × 72,222.72
  4. Step 4: Simplify right side
    129,585.00x = 12,915,524,246.03
  5. Step 5: Solve for x
    x = 12,915,524,246.03/129,585.00
  6. Step 6: Final answer
    x = 99,668.36

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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.