Home / 139,950.24-193,133.28-76,287.90

Finding the Fourth Proportional to 139,950.24, 193,133.28 and 76,287.90

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Solution

The fourth proportional to 139,950.24, 193,133.28 and 76,287.90 is: 105,278.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,950.24 : 193,133.28 = 76,287.90 : x
  2. Step 2: Convert to fraction form
    139,950.24/193,133.28 = 76,287.90/x
  3. Step 3: Cross multiply
    139,950.24x = 193,133.28 × 76,287.90
  4. Step 4: Simplify right side
    139,950.24x = 14,733,732,351.31
  5. Step 5: Solve for x
    x = 14,733,732,351.31/139,950.24
  6. Step 6: Final answer
    x = 105,278.36

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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.