Home / 109,519.94-164,279.91-42,991.40

Finding the Fourth Proportional to 109,519.94, 164,279.91 and 42,991.40

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Solution

The fourth proportional to 109,519.94, 164,279.91 and 42,991.40 is: 64,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,519.94 : 164,279.91 = 42,991.40 : x
  2. Step 2: Convert to fraction form
    109,519.94/164,279.91 = 42,991.40/x
  3. Step 3: Cross multiply
    109,519.94x = 164,279.91 × 42,991.40
  4. Step 4: Simplify right side
    109,519.94x = 7,062,623,322.77
  5. Step 5: Solve for x
    x = 7,062,623,322.77/109,519.94
  6. Step 6: Final answer
    x = 64,487.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.