Home / 120,623.64-180,877.96-54,064.32

Finding the Fourth Proportional to 120,623.64, 180,877.96 and 54,064.32

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Solution

The fourth proportional to 120,623.64, 180,877.96 and 54,064.32 is: 81,070.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,623.64 : 180,877.96 = 54,064.32 : x
  2. Step 2: Convert to fraction form
    120,623.64/180,877.96 = 54,064.32/x
  3. Step 3: Cross multiply
    120,623.64x = 180,877.96 × 54,064.32
  4. Step 4: Simplify right side
    120,623.64x = 9,779,043,910.39
  5. Step 5: Solve for x
    x = 9,779,043,910.39/120,623.64
  6. Step 6: Final answer
    x = 81,070.71

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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.