Home / 136,193.76-187,943.96-78,825.16

Finding the Fourth Proportional to 136,193.76, 187,943.96 and 78,825.16

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Solution

The fourth proportional to 136,193.76, 187,943.96 and 78,825.16 is: 108,776.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,193.76 : 187,943.96 = 78,825.16 : x
  2. Step 2: Convert to fraction form
    136,193.76/187,943.96 = 78,825.16/x
  3. Step 3: Cross multiply
    136,193.76x = 187,943.96 × 78,825.16
  4. Step 4: Simplify right side
    136,193.76x = 14,814,712,718.03
  5. Step 5: Solve for x
    x = 14,814,712,718.03/136,193.76
  6. Step 6: Final answer
    x = 108,776.74

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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.