Home / 123,390.36-170,278.72-66,801.72

Finding the Fourth Proportional to 123,390.36, 170,278.72 and 66,801.72

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Solution

The fourth proportional to 123,390.36, 170,278.72 and 66,801.72 is: 92,186.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,390.36 : 170,278.72 = 66,801.72 : x
  2. Step 2: Convert to fraction form
    123,390.36/170,278.72 = 66,801.72/x
  3. Step 3: Cross multiply
    123,390.36x = 170,278.72 × 66,801.72
  4. Step 4: Simplify right side
    123,390.36x = 11,374,911,375.40
  5. Step 5: Solve for x
    x = 11,374,911,375.40/123,390.36
  6. Step 6: Final answer
    x = 92,186.39

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1.5x scale

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.