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Finding the Fourth Proportional to 134,508, 185,671.80 and 105,752.64

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Solution

The fourth proportional to 134,508, 185,671.80 and 105,752.64 is: 145,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,508 : 185,671.80 = 105,752.64 : x
  2. Step 2: Convert to fraction form
    134,508/185,671.80 = 105,752.64/x
  3. Step 3: Cross multiply
    134,508x = 185,671.80 × 105,752.64
  4. Step 4: Simplify right side
    134,508x = 19,635,283,023.55
  5. Step 5: Solve for x
    x = 19,635,283,023.55/134,508
  6. Step 6: Final answer
    x = 145,978.55

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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.