Home / 115,920.56-173,349.48-86,358.96

Finding the Fourth Proportional to 115,920.56, 173,349.48 and 86,358.96

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Solution

The fourth proportional to 115,920.56, 173,349.48 and 86,358.96 is: 129,142.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,920.56 : 173,349.48 = 86,358.96 : x
  2. Step 2: Convert to fraction form
    115,920.56/173,349.48 = 86,358.96/x
  3. Step 3: Cross multiply
    115,920.56x = 173,349.48 × 86,358.96
  4. Step 4: Simplify right side
    115,920.56x = 14,970,280,809.34
  5. Step 5: Solve for x
    x = 14,970,280,809.34/115,920.56
  6. Step 6: Final answer
    x = 129,142.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.