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Finding the Fourth Proportional to 126,130.73, 174,811.76 and 123,768.77

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Solution

The fourth proportional to 126,130.73, 174,811.76 and 123,768.77 is: 171,538.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,130.73 : 174,811.76 = 123,768.77 : x
  2. Step 2: Convert to fraction form
    126,130.73/174,811.76 = 123,768.77/x
  3. Step 3: Cross multiply
    126,130.73x = 174,811.76 × 123,768.77
  4. Step 4: Simplify right side
    126,130.73x = 21,636,237,263.19
  5. Step 5: Solve for x
    x = 21,636,237,263.19/126,130.73
  6. Step 6: Final answer
    x = 171,538.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.