Home / 137,127.47-189,245.77-76,717.53

Finding the Fourth Proportional to 137,127.47, 189,245.77 and 76,717.53

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Solution

The fourth proportional to 137,127.47, 189,245.77 and 76,717.53 is: 105,875.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,127.47 : 189,245.77 = 76,717.53 : x
  2. Step 2: Convert to fraction form
    137,127.47/189,245.77 = 76,717.53/x
  3. Step 3: Cross multiply
    137,127.47x = 189,245.77 × 76,717.53
  4. Step 4: Simplify right side
    137,127.47x = 14,518,467,845.55
  5. Step 5: Solve for x
    x = 14,518,467,845.55/137,127.47
  6. Step 6: Final answer
    x = 105,875.71

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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.