Home / 90,900.28-125,401.90-53,157.88

Finding the Fourth Proportional to 90,900.28, 125,401.90 and 53,157.88

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Solution

The fourth proportional to 90,900.28, 125,401.90 and 53,157.88 is: 73,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,900.28 : 125,401.90 = 53,157.88 : x
  2. Step 2: Convert to fraction form
    90,900.28/125,401.90 = 53,157.88/x
  3. Step 3: Cross multiply
    90,900.28x = 125,401.90 × 53,157.88
  4. Step 4: Simplify right side
    90,900.28x = 6,666,099,151.97
  5. Step 5: Solve for x
    x = 6,666,099,151.97/90,900.28
  6. Step 6: Final answer
    x = 73,334.20

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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.