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Finding the Fourth Proportional to 118,345.44, 163,277.44 and 78,079.20

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Solution

The fourth proportional to 118,345.44, 163,277.44 and 78,079.20 is: 107,723.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,345.44 : 163,277.44 = 78,079.20 : x
  2. Step 2: Convert to fraction form
    118,345.44/163,277.44 = 78,079.20/x
  3. Step 3: Cross multiply
    118,345.44x = 163,277.44 × 78,079.20
  4. Step 4: Simplify right side
    118,345.44x = 12,748,571,893.25
  5. Step 5: Solve for x
    x = 12,748,571,893.25/118,345.44
  6. Step 6: Final answer
    x = 107,723.39

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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.