Home / 121,690.05-167,823.19-101,339.51

Finding the Fourth Proportional to 121,690.05, 167,823.19 and 101,339.51

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Solution

The fourth proportional to 121,690.05, 167,823.19 and 101,339.51 is: 139,757.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,690.05 : 167,823.19 = 101,339.51 : x
  2. Step 2: Convert to fraction form
    121,690.05/167,823.19 = 101,339.51/x
  3. Step 3: Cross multiply
    121,690.05x = 167,823.19 × 101,339.51
  4. Step 4: Simplify right side
    121,690.05x = 17,007,119,482.80
  5. Step 5: Solve for x
    x = 17,007,119,482.80/121,690.05
  6. Step 6: Final answer
    x = 139,757.68

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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.