Home / 149,979.98-206,994.90-86,305.47

Finding the Fourth Proportional to 149,979.98, 206,994.90 and 86,305.47

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Solution

The fourth proportional to 149,979.98, 206,994.90 and 86,305.47 is: 119,114.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,979.98 : 206,994.90 = 86,305.47 : x
  2. Step 2: Convert to fraction form
    149,979.98/206,994.90 = 86,305.47/x
  3. Step 3: Cross multiply
    149,979.98x = 206,994.90 × 86,305.47
  4. Step 4: Simplify right side
    149,979.98x = 17,864,792,132.10
  5. Step 5: Solve for x
    x = 17,864,792,132.10/149,979.98
  6. Step 6: Final answer
    x = 119,114.52

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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.