Home / 109,979.10-151,553.43-78,058.62

Finding the Fourth Proportional to 109,979.10, 151,553.43 and 78,058.62

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Solution

The fourth proportional to 109,979.10, 151,553.43 and 78,058.62 is: 107,566.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,979.10 : 151,553.43 = 78,058.62 : x
  2. Step 2: Convert to fraction form
    109,979.10/151,553.43 = 78,058.62/x
  3. Step 3: Cross multiply
    109,979.10x = 151,553.43 × 78,058.62
  4. Step 4: Simplify right side
    109,979.10x = 11,830,051,602.07
  5. Step 5: Solve for x
    x = 11,830,051,602.07/109,979.10
  6. Step 6: Final answer
    x = 107,566.36

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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.