Home / 117,146.22-161,685.63-79,432.62

Finding the Fourth Proportional to 117,146.22, 161,685.63 and 79,432.62

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Solution

The fourth proportional to 117,146.22, 161,685.63 and 79,432.62 is: 109,633.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,146.22 : 161,685.63 = 79,432.62 : x
  2. Step 2: Convert to fraction form
    117,146.22/161,685.63 = 79,432.62/x
  3. Step 3: Cross multiply
    117,146.22x = 161,685.63 × 79,432.62
  4. Step 4: Simplify right side
    117,146.22x = 12,843,113,207.25
  5. Step 5: Solve for x
    x = 12,843,113,207.25/117,146.22
  6. Step 6: Final answer
    x = 109,633.18

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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.