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Finding the Fourth Proportional to 104,259.54, 143,878.42 and 56,512.84

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Solution

The fourth proportional to 104,259.54, 143,878.42 and 56,512.84 is: 77,987.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,259.54 : 143,878.42 = 56,512.84 : x
  2. Step 2: Convert to fraction form
    104,259.54/143,878.42 = 56,512.84/x
  3. Step 3: Cross multiply
    104,259.54x = 143,878.42 × 56,512.84
  4. Step 4: Simplify right side
    104,259.54x = 8,130,978,128.91
  5. Step 5: Solve for x
    x = 8,130,978,128.91/104,259.54
  6. Step 6: Final answer
    x = 77,987.86

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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.