Home / 137,345.22-189,540-76,915.58

Finding the Fourth Proportional to 137,345.22, 189,540 and 76,915.58

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Solution

The fourth proportional to 137,345.22, 189,540 and 76,915.58 is: 106,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,345.22 : 189,540 = 76,915.58 : x
  2. Step 2: Convert to fraction form
    137,345.22/189,540 = 76,915.58/x
  3. Step 3: Cross multiply
    137,345.22x = 189,540 × 76,915.58
  4. Step 4: Simplify right side
    137,345.22x = 14,578,578,085.50
  5. Step 5: Solve for x
    x = 14,578,578,085.50/137,345.22
  6. Step 6: Final answer
    x = 106,145.51

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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.