Home / 126,538.79-174,631.19-72,822.63

Finding the Fourth Proportional to 126,538.79, 174,631.19 and 72,822.63

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Solution

The fourth proportional to 126,538.79, 174,631.19 and 72,822.63 is: 100,499.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,538.79 : 174,631.19 = 72,822.63 : x
  2. Step 2: Convert to fraction form
    126,538.79/174,631.19 = 72,822.63/x
  3. Step 3: Cross multiply
    126,538.79x = 174,631.19 × 72,822.63
  4. Step 4: Simplify right side
    126,538.79x = 12,717,102,171.72
  5. Step 5: Solve for x
    x = 12,717,102,171.72/126,538.79
  6. Step 6: Final answer
    x = 100,499.64

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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.