Home / 120,361.07-180,579.39-72,384.89

Finding the Fourth Proportional to 120,361.07, 180,579.39 and 72,384.89

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Solution

The fourth proportional to 120,361.07, 180,579.39 and 72,384.89 is: 108,600.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,361.07 : 180,579.39 = 72,384.89 : x
  2. Step 2: Convert to fraction form
    120,361.07/180,579.39 = 72,384.89/x
  3. Step 3: Cross multiply
    120,361.07x = 180,579.39 × 72,384.89
  4. Step 4: Simplify right side
    120,361.07x = 13,071,219,281.42
  5. Step 5: Solve for x
    x = 13,071,219,281.42/120,361.07
  6. Step 6: Final answer
    x = 108,600.06

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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.