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Finding the Fourth Proportional to 101,514.75, 140,090.36 and 56,802.75

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Solution

The fourth proportional to 101,514.75, 140,090.36 and 56,802.75 is: 78,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,514.75 : 140,090.36 = 56,802.75 : x
  2. Step 2: Convert to fraction form
    101,514.75/140,090.36 = 56,802.75/x
  3. Step 3: Cross multiply
    101,514.75x = 140,090.36 × 56,802.75
  4. Step 4: Simplify right side
    101,514.75x = 7,957,517,412.48
  5. Step 5: Solve for x
    x = 7,957,517,412.48/101,514.75
  6. Step 6: Final answer
    x = 78,387.80

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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.