Home / 125,360.55-188,207.69-72,807.75

Finding the Fourth Proportional to 125,360.55, 188,207.69 and 72,807.75

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Solution

The fourth proportional to 125,360.55, 188,207.69 and 72,807.75 is: 109,308.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,360.55 : 188,207.69 = 72,807.75 : x
  2. Step 2: Convert to fraction form
    125,360.55/188,207.69 = 72,807.75/x
  3. Step 3: Cross multiply
    125,360.55x = 188,207.69 × 72,807.75
  4. Step 4: Simplify right side
    125,360.55x = 13,702,978,077.56
  5. Step 5: Solve for x
    x = 13,702,978,077.56/125,360.55
  6. Step 6: Final answer
    x = 109,308.54

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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.