Home / 264,664.08-396,909.72-87,129.36

Finding the Fourth Proportional to 264,664.08, 396,909.72 and 87,129.36

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Solution

The fourth proportional to 264,664.08, 396,909.72 and 87,129.36 is: 130,665.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,664.08 : 396,909.72 = 87,129.36 : x
  2. Step 2: Convert to fraction form
    264,664.08/396,909.72 = 87,129.36/x
  3. Step 3: Cross multiply
    264,664.08x = 396,909.72 × 87,129.36
  4. Step 4: Simplify right side
    264,664.08x = 34,582,489,881.38
  5. Step 5: Solve for x
    x = 34,582,489,881.38/264,664.08
  6. Step 6: Final answer
    x = 130,665.60

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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.