Home / 136,981.08-189,034.14-76,551.72

Finding the Fourth Proportional to 136,981.08, 189,034.14 and 76,551.72

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Solution

The fourth proportional to 136,981.08, 189,034.14 and 76,551.72 is: 105,641.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,981.08 : 189,034.14 = 76,551.72 : x
  2. Step 2: Convert to fraction form
    136,981.08/189,034.14 = 76,551.72/x
  3. Step 3: Cross multiply
    136,981.08x = 189,034.14 × 76,551.72
  4. Step 4: Simplify right side
    136,981.08x = 14,470,888,555.72
  5. Step 5: Solve for x
    x = 14,470,888,555.72/136,981.08
  6. Step 6: Final answer
    x = 105,641.51

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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.