Home / 98,680.47-136,170.82-55,657.59

Finding the Fourth Proportional to 98,680.47, 136,170.82 and 55,657.59

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Solution

The fourth proportional to 98,680.47, 136,170.82 and 55,657.59 is: 76,802.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,680.47 : 136,170.82 = 55,657.59 : x
  2. Step 2: Convert to fraction form
    98,680.47/136,170.82 = 55,657.59/x
  3. Step 3: Cross multiply
    98,680.47x = 136,170.82 × 55,657.59
  4. Step 4: Simplify right side
    98,680.47x = 7,578,939,669.52
  5. Step 5: Solve for x
    x = 7,578,939,669.52/98,680.47
  6. Step 6: Final answer
    x = 76,802.83

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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.