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Finding the Fourth Proportional to 126,381.70, 174,406.50 and 72,677.08

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Solution

The fourth proportional to 126,381.70, 174,406.50 and 72,677.08 is: 100,294.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,381.70 : 174,406.50 = 72,677.08 : x
  2. Step 2: Convert to fraction form
    126,381.70/174,406.50 = 72,677.08/x
  3. Step 3: Cross multiply
    126,381.70x = 174,406.50 × 72,677.08
  4. Step 4: Simplify right side
    126,381.70x = 12,675,355,153.02
  5. Step 5: Solve for x
    x = 12,675,355,153.02/126,381.70
  6. Step 6: Final answer
    x = 100,294.23

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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.