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Finding the Fourth Proportional to 78,168.51, 117,259.68 and 22,009.10

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Solution

The fourth proportional to 78,168.51, 117,259.68 and 22,009.10 is: 33,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,168.51 : 117,259.68 = 22,009.10 : x
  2. Step 2: Convert to fraction form
    78,168.51/117,259.68 = 22,009.10/x
  3. Step 3: Cross multiply
    78,168.51x = 117,259.68 × 22,009.10
  4. Step 4: Simplify right side
    78,168.51x = 2,580,780,023.09
  5. Step 5: Solve for x
    x = 2,580,780,023.09/78,168.51
  6. Step 6: Final answer
    x = 33,015.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.