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Finding the Fourth Proportional to 126,384.75, 174,409.50 and 72,669.98

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Solution

The fourth proportional to 126,384.75, 174,409.50 and 72,669.98 is: 100,283.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,384.75 : 174,409.50 = 72,669.98 : x
  2. Step 2: Convert to fraction form
    126,384.75/174,409.50 = 72,669.98/x
  3. Step 3: Cross multiply
    126,384.75x = 174,409.50 × 72,669.98
  4. Step 4: Simplify right side
    126,384.75x = 12,674,334,004.76
  5. Step 5: Solve for x
    x = 12,674,334,004.76/126,384.75
  6. Step 6: Final answer
    x = 100,283.73

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1.5x scale

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.