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Finding the Fourth Proportional to 141,644.25, 195,468.03 and 77,980.68

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Solution

The fourth proportional to 141,644.25, 195,468.03 and 77,980.68 is: 107,612.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,644.25 : 195,468.03 = 77,980.68 : x
  2. Step 2: Convert to fraction form
    141,644.25/195,468.03 = 77,980.68/x
  3. Step 3: Cross multiply
    141,644.25x = 195,468.03 × 77,980.68
  4. Step 4: Simplify right side
    141,644.25x = 15,242,729,897.66
  5. Step 5: Solve for x
    x = 15,242,729,897.66/141,644.25
  6. Step 6: Final answer
    x = 107,612.77

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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.