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Finding the Fourth Proportional to 141,137.76, 194,774.40 and 77,479.68

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Solution

The fourth proportional to 141,137.76, 194,774.40 and 77,479.68 is: 106,924.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,137.76 : 194,774.40 = 77,479.68 : x
  2. Step 2: Convert to fraction form
    141,137.76/194,774.40 = 77,479.68/x
  3. Step 3: Cross multiply
    141,137.76x = 194,774.40 × 77,479.68
  4. Step 4: Simplify right side
    141,137.76x = 15,091,058,184.19
  5. Step 5: Solve for x
    x = 15,091,058,184.19/141,137.76
  6. Step 6: Final answer
    x = 106,924.31

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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.