Home / 120,082.03-165,689.65-72,338.00

Finding the Fourth Proportional to 120,082.03, 165,689.65 and 72,338.00

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Solution

The fourth proportional to 120,082.03, 165,689.65 and 72,338.00 is: 99,812.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,082.03 : 165,689.65 = 72,338.00 : x
  2. Step 2: Convert to fraction form
    120,082.03/165,689.65 = 72,338.00/x
  3. Step 3: Cross multiply
    120,082.03x = 165,689.65 × 72,338.00
  4. Step 4: Simplify right side
    120,082.03x = 11,985,657,163.67
  5. Step 5: Solve for x
    x = 11,985,657,163.67/120,082.03
  6. Step 6: Final answer
    x = 99,812.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.