Home / 136,983.74-189,036.95-76,554.36

Finding the Fourth Proportional to 136,983.74, 189,036.95 and 76,554.36

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Solution

The fourth proportional to 136,983.74, 189,036.95 and 76,554.36 is: 105,644.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,983.74 : 189,036.95 = 76,554.36 : x
  2. Step 2: Convert to fraction form
    136,983.74/189,036.95 = 76,554.36/x
  3. Step 3: Cross multiply
    136,983.74x = 189,036.95 × 76,554.36
  4. Step 4: Simplify right side
    136,983.74x = 14,471,602,340.83
  5. Step 5: Solve for x
    x = 14,471,602,340.83/136,983.74
  6. Step 6: Final answer
    x = 105,644.68

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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.