Home / 87,941.81-131,956.46-70,190.66

Finding the Fourth Proportional to 87,941.81, 131,956.46 and 70,190.66

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Solution

The fourth proportional to 87,941.81, 131,956.46 and 70,190.66 is: 105,320.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,941.81 : 131,956.46 = 70,190.66 : x
  2. Step 2: Convert to fraction form
    87,941.81/131,956.46 = 70,190.66/x
  3. Step 3: Cross multiply
    87,941.81x = 131,956.46 × 70,190.66
  4. Step 4: Simplify right side
    87,941.81x = 9,262,111,018.66
  5. Step 5: Solve for x
    x = 9,262,111,018.66/87,941.81
  6. Step 6: Final answer
    x = 105,320.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.