Home / 121,731.51-168,036.30-108,962.13

Finding the Fourth Proportional to 121,731.51, 168,036.30 and 108,962.13

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Solution

The fourth proportional to 121,731.51, 168,036.30 and 108,962.13 is: 150,409.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,731.51 : 168,036.30 = 108,962.13 : x
  2. Step 2: Convert to fraction form
    121,731.51/168,036.30 = 108,962.13/x
  3. Step 3: Cross multiply
    121,731.51x = 168,036.30 × 108,962.13
  4. Step 4: Simplify right side
    121,731.51x = 18,309,593,165.32
  5. Step 5: Solve for x
    x = 18,309,593,165.32/121,731.51
  6. Step 6: Final answer
    x = 150,409.64

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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.