Home / 139,872.58-193,021.73-76,210.90

Finding the Fourth Proportional to 139,872.58, 193,021.73 and 76,210.90

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Solution

The fourth proportional to 139,872.58, 193,021.73 and 76,210.90 is: 105,169.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,872.58 : 193,021.73 = 76,210.90 : x
  2. Step 2: Convert to fraction form
    139,872.58/193,021.73 = 76,210.90/x
  3. Step 3: Cross multiply
    139,872.58x = 193,021.73 × 76,210.90
  4. Step 4: Simplify right side
    139,872.58x = 14,710,359,762.86
  5. Step 5: Solve for x
    x = 14,710,359,762.86/139,872.58
  6. Step 6: Final answer
    x = 105,169.72

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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.