Home / 120,927.12-181,089-76,419.60

Finding the Fourth Proportional to 120,927.12, 181,089 and 76,419.60

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Solution

The fourth proportional to 120,927.12, 181,089 and 76,419.60 is: 114,438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,927.12 : 181,089 = 76,419.60 : x
  2. Step 2: Convert to fraction form
    120,927.12/181,089 = 76,419.60/x
  3. Step 3: Cross multiply
    120,927.12x = 181,089 × 76,419.60
  4. Step 4: Simplify right side
    120,927.12x = 13,838,748,944.40
  5. Step 5: Solve for x
    x = 13,838,748,944.40/120,927.12
  6. Step 6: Final answer
    x = 114,438.75

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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.