Home / 121,565.42-167,628.03-79,045.10

Finding the Fourth Proportional to 121,565.42, 167,628.03 and 79,045.10

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Solution

The fourth proportional to 121,565.42, 167,628.03 and 79,045.10 is: 108,996.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,565.42 : 167,628.03 = 79,045.10 : x
  2. Step 2: Convert to fraction form
    121,565.42/167,628.03 = 79,045.10/x
  3. Step 3: Cross multiply
    121,565.42x = 167,628.03 × 79,045.10
  4. Step 4: Simplify right side
    121,565.42x = 13,250,174,394.15
  5. Step 5: Solve for x
    x = 13,250,174,394.15/121,565.42
  6. Step 6: Final answer
    x = 108,996.25

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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.