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Finding the Fourth Proportional to 115,904.40, 173,881.80 and 66,008.40

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Solution

The fourth proportional to 115,904.40, 173,881.80 and 66,008.40 is: 99,026.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,904.40 : 173,881.80 = 66,008.40 : x
  2. Step 2: Convert to fraction form
    115,904.40/173,881.80 = 66,008.40/x
  3. Step 3: Cross multiply
    115,904.40x = 173,881.80 × 66,008.40
  4. Step 4: Simplify right side
    115,904.40x = 11,477,659,407.12
  5. Step 5: Solve for x
    x = 11,477,659,407.12/115,904.40
  6. Step 6: Final answer
    x = 99,026.95

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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.