Home / 134,257.89-185,275.63-76,915.78

Finding the Fourth Proportional to 134,257.89, 185,275.63 and 76,915.78

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Solution

The fourth proportional to 134,257.89, 185,275.63 and 76,915.78 is: 106,143.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,257.89 : 185,275.63 = 76,915.78 : x
  2. Step 2: Convert to fraction form
    134,257.89/185,275.63 = 76,915.78/x
  3. Step 3: Cross multiply
    134,257.89x = 185,275.63 × 76,915.78
  4. Step 4: Simplify right side
    134,257.89x = 14,250,619,596.44
  5. Step 5: Solve for x
    x = 14,250,619,596.44/134,257.89
  6. Step 6: Final answer
    x = 106,143.63

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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.