Home / 139,856.03-209,849.66-69,740.81

Finding the Fourth Proportional to 139,856.03, 209,849.66 and 69,740.81

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Solution

The fourth proportional to 139,856.03, 209,849.66 and 69,740.81 is: 104,643.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,856.03 : 209,849.66 = 69,740.81 : x
  2. Step 2: Convert to fraction form
    139,856.03/209,849.66 = 69,740.81/x
  3. Step 3: Cross multiply
    139,856.03x = 209,849.66 × 69,740.81
  4. Step 4: Simplify right side
    139,856.03x = 14,635,084,917.92
  5. Step 5: Solve for x
    x = 14,635,084,917.92/139,856.03
  6. Step 6: Final answer
    x = 104,643.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.