Home / 137,014.58-189,065.66-76,578.86

Finding the Fourth Proportional to 137,014.58, 189,065.66 and 76,578.86

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Solution

The fourth proportional to 137,014.58, 189,065.66 and 76,578.86 is: 105,670.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,014.58 : 189,065.66 = 76,578.86 : x
  2. Step 2: Convert to fraction form
    137,014.58/189,065.66 = 76,578.86/x
  3. Step 3: Cross multiply
    137,014.58x = 189,065.66 × 76,578.86
  4. Step 4: Simplify right side
    137,014.58x = 14,478,432,707.95
  5. Step 5: Solve for x
    x = 14,478,432,707.95/137,014.58
  6. Step 6: Final answer
    x = 105,670.74

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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.