Home / 121,171.52-167,122.08-78,743.84

Finding the Fourth Proportional to 121,171.52, 167,122.08 and 78,743.84

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Solution

The fourth proportional to 121,171.52, 167,122.08 and 78,743.84 is: 108,605.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,171.52 : 167,122.08 = 78,743.84 : x
  2. Step 2: Convert to fraction form
    121,171.52/167,122.08 = 78,743.84/x
  3. Step 3: Cross multiply
    121,171.52x = 167,122.08 × 78,743.84
  4. Step 4: Simplify right side
    121,171.52x = 13,159,834,327.99
  5. Step 5: Solve for x
    x = 13,159,834,327.99/121,171.52
  6. Step 6: Final answer
    x = 108,605.01

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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.