Home / 120,075.18-165,704.29-65,628.47

Finding the Fourth Proportional to 120,075.18, 165,704.29 and 65,628.47

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Solution

The fourth proportional to 120,075.18, 165,704.29 and 65,628.47 is: 90,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,075.18 : 165,704.29 = 65,628.47 : x
  2. Step 2: Convert to fraction form
    120,075.18/165,704.29 = 65,628.47/x
  3. Step 3: Cross multiply
    120,075.18x = 165,704.29 × 65,628.47
  4. Step 4: Simplify right side
    120,075.18x = 10,874,918,032.54
  5. Step 5: Solve for x
    x = 10,874,918,032.54/120,075.18
  6. Step 6: Final answer
    x = 90,567.58

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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.