Home / 121,954.12-168,184.88-104,720.64

Finding the Fourth Proportional to 121,954.12, 168,184.88 and 104,720.64

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Solution

The fourth proportional to 121,954.12, 168,184.88 and 104,720.64 is: 144,418.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,954.12 : 168,184.88 = 104,720.64 : x
  2. Step 2: Convert to fraction form
    121,954.12/168,184.88 = 104,720.64/x
  3. Step 3: Cross multiply
    121,954.12x = 168,184.88 × 104,720.64
  4. Step 4: Simplify right side
    121,954.12x = 17,612,426,907.40
  5. Step 5: Solve for x
    x = 17,612,426,907.40/121,954.12
  6. Step 6: Final answer
    x = 144,418.47

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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.