Home / 139,129.16-191,996.88-75,466.04

Finding the Fourth Proportional to 139,129.16, 191,996.88 and 75,466.04

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Solution

The fourth proportional to 139,129.16, 191,996.88 and 75,466.04 is: 104,142.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,129.16 : 191,996.88 = 75,466.04 : x
  2. Step 2: Convert to fraction form
    139,129.16/191,996.88 = 75,466.04/x
  3. Step 3: Cross multiply
    139,129.16x = 191,996.88 × 75,466.04
  4. Step 4: Simplify right side
    139,129.16x = 14,489,244,225.96
  5. Step 5: Solve for x
    x = 14,489,244,225.96/139,129.16
  6. Step 6: Final answer
    x = 104,142.40

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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.