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Finding the Fourth Proportional to 126,741.60, 190,041.60 and 51,913.92

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Solution

The fourth proportional to 126,741.60, 190,041.60 and 51,913.92 is: 77,841.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,741.60 : 190,041.60 = 51,913.92 : x
  2. Step 2: Convert to fraction form
    126,741.60/190,041.60 = 51,913.92/x
  3. Step 3: Cross multiply
    126,741.60x = 190,041.60 × 51,913.92
  4. Step 4: Simplify right side
    126,741.60x = 9,865,804,419.07
  5. Step 5: Solve for x
    x = 9,865,804,419.07/126,741.60
  6. Step 6: Final answer
    x = 77,841.88

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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.