Home / 137,148.36-189,255.85-76,708.55

Finding the Fourth Proportional to 137,148.36, 189,255.85 and 76,708.55

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Solution

The fourth proportional to 137,148.36, 189,255.85 and 76,708.55 is: 105,852.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,148.36 : 189,255.85 = 76,708.55 : x
  2. Step 2: Convert to fraction form
    137,148.36/189,255.85 = 76,708.55/x
  3. Step 3: Cross multiply
    137,148.36x = 189,255.85 × 76,708.55
  4. Step 4: Simplify right side
    137,148.36x = 14,517,540,694.47
  5. Step 5: Solve for x
    x = 14,517,540,694.47/137,148.36
  6. Step 6: Final answer
    x = 105,852.82

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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.