Home / 91,423.30-126,113.38-53,178.54

Finding the Fourth Proportional to 91,423.30, 126,113.38 and 53,178.54

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Solution

The fourth proportional to 91,423.30, 126,113.38 and 53,178.54 is: 73,356.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,423.30 : 126,113.38 = 53,178.54 : x
  2. Step 2: Convert to fraction form
    91,423.30/126,113.38 = 53,178.54/x
  3. Step 3: Cross multiply
    91,423.30x = 126,113.38 × 53,178.54
  4. Step 4: Simplify right side
    91,423.30x = 6,706,525,422.87
  5. Step 5: Solve for x
    x = 6,706,525,422.87/91,423.30
  6. Step 6: Final answer
    x = 73,356.85

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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.