Home / 136,621.65-188,537.50-76,192.36

Finding the Fourth Proportional to 136,621.65, 188,537.50 and 76,192.36

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Solution

The fourth proportional to 136,621.65, 188,537.50 and 76,192.36 is: 105,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,621.65 : 188,537.50 = 76,192.36 : x
  2. Step 2: Convert to fraction form
    136,621.65/188,537.50 = 76,192.36/x
  3. Step 3: Cross multiply
    136,621.65x = 188,537.50 × 76,192.36
  4. Step 4: Simplify right side
    136,621.65x = 14,365,117,073.50
  5. Step 5: Solve for x
    x = 14,365,117,073.50/136,621.65
  6. Step 6: Final answer
    x = 105,145.25

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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.