Home / 137,875.75-190,251.82-76,621.65

Finding the Fourth Proportional to 137,875.75, 190,251.82 and 76,621.65

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Solution

The fourth proportional to 137,875.75, 190,251.82 and 76,621.65 is: 105,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,875.75 : 190,251.82 = 76,621.65 : x
  2. Step 2: Convert to fraction form
    137,875.75/190,251.82 = 76,621.65/x
  3. Step 3: Cross multiply
    137,875.75x = 190,251.82 × 76,621.65
  4. Step 4: Simplify right side
    137,875.75x = 14,577,407,746.24
  5. Step 5: Solve for x
    x = 14,577,407,746.24/137,875.75
  6. Step 6: Final answer
    x = 105,728.58

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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.