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Finding the Fourth Proportional to 115,552.53, 159,130.80 and 99,289.89

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Solution

The fourth proportional to 115,552.53, 159,130.80 and 99,289.89 is: 136,735.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,552.53 : 159,130.80 = 99,289.89 : x
  2. Step 2: Convert to fraction form
    115,552.53/159,130.80 = 99,289.89/x
  3. Step 3: Cross multiply
    115,552.53x = 159,130.80 × 99,289.89
  4. Step 4: Simplify right side
    115,552.53x = 15,800,079,627.61
  5. Step 5: Solve for x
    x = 15,800,079,627.61/115,552.53
  6. Step 6: Final answer
    x = 136,735.04

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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.