Home / 420,160.55-630,322.76-135,921.56

Finding the Fourth Proportional to 420,160.55, 630,322.76 and 135,921.56

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Solution

The fourth proportional to 420,160.55, 630,322.76 and 135,921.56 is: 203,908.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,160.55 : 630,322.76 = 135,921.56 : x
  2. Step 2: Convert to fraction form
    420,160.55/630,322.76 = 135,921.56/x
  3. Step 3: Cross multiply
    420,160.55x = 630,322.76 × 135,921.56
  4. Step 4: Simplify right side
    420,160.55x = 85,674,450,030.90
  5. Step 5: Solve for x
    x = 85,674,450,030.90/420,160.55
  6. Step 6: Final answer
    x = 203,908.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.