Home / 136,076.91-187,509.19-105,262.80

Finding the Fourth Proportional to 136,076.91, 187,509.19 and 105,262.80

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Solution

The fourth proportional to 136,076.91, 187,509.19 and 105,262.80 is: 145,048.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,076.91 : 187,509.19 = 105,262.80 : x
  2. Step 2: Convert to fraction form
    136,076.91/187,509.19 = 105,262.80/x
  3. Step 3: Cross multiply
    136,076.91x = 187,509.19 × 105,262.80
  4. Step 4: Simplify right side
    136,076.91x = 19,737,742,101.98
  5. Step 5: Solve for x
    x = 19,737,742,101.98/136,076.91
  6. Step 6: Final answer
    x = 145,048.43

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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.