Home / 137,288.50-189,461.29-76,857.62

Finding the Fourth Proportional to 137,288.50, 189,461.29 and 76,857.62

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Solution

The fourth proportional to 137,288.50, 189,461.29 and 76,857.62 is: 106,065.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,288.50 : 189,461.29 = 76,857.62 : x
  2. Step 2: Convert to fraction form
    137,288.50/189,461.29 = 76,857.62/x
  3. Step 3: Cross multiply
    137,288.50x = 189,461.29 × 76,857.62
  4. Step 4: Simplify right side
    137,288.50x = 14,561,543,831.53
  5. Step 5: Solve for x
    x = 14,561,543,831.53/137,288.50
  6. Step 6: Final answer
    x = 106,065.28

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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.