Home / 137,126.97-189,225.45-79,775.33

Finding the Fourth Proportional to 137,126.97, 189,225.45 and 79,775.33

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Solution

The fourth proportional to 137,126.97, 189,225.45 and 79,775.33 is: 110,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,126.97 : 189,225.45 = 79,775.33 : x
  2. Step 2: Convert to fraction form
    137,126.97/189,225.45 = 79,775.33/x
  3. Step 3: Cross multiply
    137,126.97x = 189,225.45 × 79,775.33
  4. Step 4: Simplify right side
    137,126.97x = 15,095,521,772.02
  5. Step 5: Solve for x
    x = 15,095,521,772.02/137,126.97
  6. Step 6: Final answer
    x = 110,084.27

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1.5x scale

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.