Home / 420,106.10-630,155.91-104,560.88

Finding the Fourth Proportional to 420,106.10, 630,155.91 and 104,560.88

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Solution

The fourth proportional to 420,106.10, 630,155.91 and 104,560.88 is: 156,840.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,106.10 : 630,155.91 = 104,560.88 : x
  2. Step 2: Convert to fraction form
    420,106.10/630,155.91 = 104,560.88/x
  3. Step 3: Cross multiply
    420,106.10x = 630,155.91 × 104,560.88
  4. Step 4: Simplify right side
    420,106.10x = 65,889,654,519.31
  5. Step 5: Solve for x
    x = 65,889,654,519.31/420,106.10
  6. Step 6: Final answer
    x = 156,840.51

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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.