Home / 126,369.72-174,420.12-72,685.75

Finding the Fourth Proportional to 126,369.72, 174,420.12 and 72,685.75

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Solution

The fourth proportional to 126,369.72, 174,420.12 and 72,685.75 is: 100,323.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,369.72 : 174,420.12 = 72,685.75 : x
  2. Step 2: Convert to fraction form
    126,369.72/174,420.12 = 72,685.75/x
  3. Step 3: Cross multiply
    126,369.72x = 174,420.12 × 72,685.75
  4. Step 4: Simplify right side
    126,369.72x = 12,677,857,237.29
  5. Step 5: Solve for x
    x = 12,677,857,237.29/126,369.72
  6. Step 6: Final answer
    x = 100,323.54

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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.