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Finding the Fourth Proportional to 115,903.90, 173,881.05 and 66,007.90

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Solution

The fourth proportional to 115,903.90, 173,881.05 and 66,007.90 is: 99,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,903.90 : 173,881.05 = 66,007.90 : x
  2. Step 2: Convert to fraction form
    115,903.90/173,881.05 = 66,007.90/x
  3. Step 3: Cross multiply
    115,903.90x = 173,881.05 × 66,007.90
  4. Step 4: Simplify right side
    115,903.90x = 11,477,522,960.30
  5. Step 5: Solve for x
    x = 11,477,522,960.30/115,903.90
  6. Step 6: Final answer
    x = 99,026.20

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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.