Home / 121,355.38-167,089.30-103,170.32

Finding the Fourth Proportional to 121,355.38, 167,089.30 and 103,170.32

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Solution

The fourth proportional to 121,355.38, 167,089.30 and 103,170.32 is: 142,051.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,355.38 : 167,089.30 = 103,170.32 : x
  2. Step 2: Convert to fraction form
    121,355.38/167,089.30 = 103,170.32/x
  3. Step 3: Cross multiply
    121,355.38x = 167,089.30 × 103,170.32
  4. Step 4: Simplify right side
    121,355.38x = 17,238,656,549.58
  5. Step 5: Solve for x
    x = 17,238,656,549.58/121,355.38
  6. Step 6: Final answer
    x = 142,051.03

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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.