Home / 139,874.08-193,023.80-76,212.40

Finding the Fourth Proportional to 139,874.08, 193,023.80 and 76,212.40

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Solution

The fourth proportional to 139,874.08, 193,023.80 and 76,212.40 is: 105,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,874.08 : 193,023.80 = 76,212.40 : x
  2. Step 2: Convert to fraction form
    139,874.08/193,023.80 = 76,212.40/x
  3. Step 3: Cross multiply
    139,874.08x = 193,023.80 × 76,212.40
  4. Step 4: Simplify right side
    139,874.08x = 14,710,807,055.12
  5. Step 5: Solve for x
    x = 14,710,807,055.12/139,874.08
  6. Step 6: Final answer
    x = 105,171.79

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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.