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Finding the Fourth Proportional to 118,710.86, 163,820.64 and 64,995.44

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Solution

The fourth proportional to 118,710.86, 163,820.64 and 64,995.44 is: 89,693.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,710.86 : 163,820.64 = 64,995.44 : x
  2. Step 2: Convert to fraction form
    118,710.86/163,820.64 = 64,995.44/x
  3. Step 3: Cross multiply
    118,710.86x = 163,820.64 × 64,995.44
  4. Step 4: Simplify right side
    118,710.86x = 10,647,594,577.88
  5. Step 5: Solve for x
    x = 10,647,594,577.88/118,710.86
  6. Step 6: Final answer
    x = 89,693.52

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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.