Home / 157,640.08-217,543.86-86,021.68

Finding the Fourth Proportional to 157,640.08, 217,543.86 and 86,021.68

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Solution

The fourth proportional to 157,640.08, 217,543.86 and 86,021.68 is: 118,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,640.08 : 217,543.86 = 86,021.68 : x
  2. Step 2: Convert to fraction form
    157,640.08/217,543.86 = 86,021.68/x
  3. Step 3: Cross multiply
    157,640.08x = 217,543.86 × 86,021.68
  4. Step 4: Simplify right side
    157,640.08x = 18,713,488,310.88
  5. Step 5: Solve for x
    x = 18,713,488,310.88/157,640.08
  6. Step 6: Final answer
    x = 118,710.22

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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.