Home / 136,968.45-205,345.14-87,039.24

Finding the Fourth Proportional to 136,968.45, 205,345.14 and 87,039.24

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Solution

The fourth proportional to 136,968.45, 205,345.14 and 87,039.24 is: 130,490.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,968.45 : 205,345.14 = 87,039.24 : x
  2. Step 2: Convert to fraction form
    136,968.45/205,345.14 = 87,039.24/x
  3. Step 3: Cross multiply
    136,968.45x = 205,345.14 × 87,039.24
  4. Step 4: Simplify right side
    136,968.45x = 17,873,084,923.29
  5. Step 5: Solve for x
    x = 17,873,084,923.29/136,968.45
  6. Step 6: Final answer
    x = 130,490.52

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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.