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Finding the Fourth Proportional to 108,812.32, 162,897.72 and 106,129.60

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Solution

The fourth proportional to 108,812.32, 162,897.72 and 106,129.60 is: 158,881.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,812.32 : 162,897.72 = 106,129.60 : x
  2. Step 2: Convert to fraction form
    108,812.32/162,897.72 = 106,129.60/x
  3. Step 3: Cross multiply
    108,812.32x = 162,897.72 × 106,129.60
  4. Step 4: Simplify right side
    108,812.32x = 17,288,269,864.51
  5. Step 5: Solve for x
    x = 17,288,269,864.51/108,812.32
  6. Step 6: Final answer
    x = 158,881.55

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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.