Home / 120,643.20-181,008.72-41,765.40

Finding the Fourth Proportional to 120,643.20, 181,008.72 and 41,765.40

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Solution

The fourth proportional to 120,643.20, 181,008.72 and 41,765.40 is: 62,663.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,643.20 : 181,008.72 = 41,765.40 : x
  2. Step 2: Convert to fraction form
    120,643.20/181,008.72 = 41,765.40/x
  3. Step 3: Cross multiply
    120,643.20x = 181,008.72 × 41,765.40
  4. Step 4: Simplify right side
    120,643.20x = 7,559,901,594.29
  5. Step 5: Solve for x
    x = 7,559,901,594.29/120,643.20
  6. Step 6: Final answer
    x = 62,663.30

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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.