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Finding the Fourth Proportional to 141,383.61, 195,104.43 and 77,720.99

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Solution

The fourth proportional to 141,383.61, 195,104.43 and 77,720.99 is: 107,252.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,383.61 : 195,104.43 = 77,720.99 : x
  2. Step 2: Convert to fraction form
    141,383.61/195,104.43 = 77,720.99/x
  3. Step 3: Cross multiply
    141,383.61x = 195,104.43 × 77,720.99
  4. Step 4: Simplify right side
    141,383.61x = 15,163,708,477.46
  5. Step 5: Solve for x
    x = 15,163,708,477.46/141,383.61
  6. Step 6: Final answer
    x = 107,252.24

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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.