Home / 157,835.10-217,817.67-86,221.80

Finding the Fourth Proportional to 157,835.10, 217,817.67 and 86,221.80

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Solution

The fourth proportional to 157,835.10, 217,817.67 and 86,221.80 is: 118,988.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,835.10 : 217,817.67 = 86,221.80 : x
  2. Step 2: Convert to fraction form
    157,835.10/217,817.67 = 86,221.80/x
  3. Step 3: Cross multiply
    157,835.10x = 217,817.67 × 86,221.80
  4. Step 4: Simplify right side
    157,835.10x = 18,780,631,579.21
  5. Step 5: Solve for x
    x = 18,780,631,579.21/157,835.10
  6. Step 6: Final answer
    x = 118,988.94

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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.