Home / 136,983.34-189,035.13-76,554.91

Finding the Fourth Proportional to 136,983.34, 189,035.13 and 76,554.91

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Solution

The fourth proportional to 136,983.34, 189,035.13 and 76,554.91 is: 105,644.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,983.34 : 189,035.13 = 76,554.91 : x
  2. Step 2: Convert to fraction form
    136,983.34/189,035.13 = 76,554.91/x
  3. Step 3: Cross multiply
    136,983.34x = 189,035.13 × 76,554.91
  4. Step 4: Simplify right side
    136,983.34x = 14,471,567,363.99
  5. Step 5: Solve for x
    x = 14,471,567,363.99/136,983.34
  6. Step 6: Final answer
    x = 105,644.73

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1.5x scale

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.