Home / 120,488.64-180,794.94-57,380.34

Finding the Fourth Proportional to 120,488.64, 180,794.94 and 57,380.34

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Solution

The fourth proportional to 120,488.64, 180,794.94 and 57,380.34 is: 86,100.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,488.64 : 180,794.94 = 57,380.34 : x
  2. Step 2: Convert to fraction form
    120,488.64/180,794.94 = 57,380.34/x
  3. Step 3: Cross multiply
    120,488.64x = 180,794.94 × 57,380.34
  4. Step 4: Simplify right side
    120,488.64x = 10,374,075,127.48
  5. Step 5: Solve for x
    x = 10,374,075,127.48/120,488.64
  6. Step 6: Final answer
    x = 86,100.03

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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.