Home / 139,875.20-193,028.64-83,288.96

Finding the Fourth Proportional to 139,875.20, 193,028.64 and 83,288.96

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Solution

The fourth proportional to 139,875.20, 193,028.64 and 83,288.96 is: 114,939.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,875.20 : 193,028.64 = 83,288.96 : x
  2. Step 2: Convert to fraction form
    139,875.20/193,028.64 = 83,288.96/x
  3. Step 3: Cross multiply
    139,875.20x = 193,028.64 × 83,288.96
  4. Step 4: Simplify right side
    139,875.20x = 16,077,154,675.81
  5. Step 5: Solve for x
    x = 16,077,154,675.81/139,875.20
  6. Step 6: Final answer
    x = 114,939.28

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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.