Home / 136,981.44-189,038.52-76,550.04

Finding the Fourth Proportional to 136,981.44, 189,038.52 and 76,550.04

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Solution

The fourth proportional to 136,981.44, 189,038.52 and 76,550.04 is: 105,641.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,981.44 : 189,038.52 = 76,550.04 : x
  2. Step 2: Convert to fraction form
    136,981.44/189,038.52 = 76,550.04/x
  3. Step 3: Cross multiply
    136,981.44x = 189,038.52 × 76,550.04
  4. Step 4: Simplify right side
    136,981.44x = 14,470,906,267.54
  5. Step 5: Solve for x
    x = 14,470,906,267.54/136,981.44
  6. Step 6: Final answer
    x = 105,641.36

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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.