Home / 129,001.63-178,016.23-71,644.67

Finding the Fourth Proportional to 129,001.63, 178,016.23 and 71,644.67

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Solution

The fourth proportional to 129,001.63, 178,016.23 and 71,644.67 is: 98,866.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,001.63 : 178,016.23 = 71,644.67 : x
  2. Step 2: Convert to fraction form
    129,001.63/178,016.23 = 71,644.67/x
  3. Step 3: Cross multiply
    129,001.63x = 178,016.23 × 71,644.67
  4. Step 4: Simplify right side
    129,001.63x = 12,753,913,920.03
  5. Step 5: Solve for x
    x = 12,753,913,920.03/129,001.63
  6. Step 6: Final answer
    x = 98,866.30

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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.