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Finding the Fourth Proportional to 121,395.74, 167,530.96 and 67,690.32

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Solution

The fourth proportional to 121,395.74, 167,530.96 and 67,690.32 is: 93,415.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,395.74 : 167,530.96 = 67,690.32 : x
  2. Step 2: Convert to fraction form
    121,395.74/167,530.96 = 67,690.32/x
  3. Step 3: Cross multiply
    121,395.74x = 167,530.96 × 67,690.32
  4. Step 4: Simplify right side
    121,395.74x = 11,340,224,292.31
  5. Step 5: Solve for x
    x = 11,340,224,292.31/121,395.74
  6. Step 6: Final answer
    x = 93,415.34

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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.