Home / 157,961.41-217,986.75-86,341.71

Finding the Fourth Proportional to 157,961.41, 217,986.75 and 86,341.71

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Solution

The fourth proportional to 157,961.41, 217,986.75 and 86,341.71 is: 119,151.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,961.41 : 217,986.75 = 86,341.71 : x
  2. Step 2: Convert to fraction form
    157,961.41/217,986.75 = 86,341.71/x
  3. Step 3: Cross multiply
    157,961.41x = 217,986.75 × 86,341.71
  4. Step 4: Simplify right side
    157,961.41x = 18,821,348,752.34
  5. Step 5: Solve for x
    x = 18,821,348,752.34/157,961.41
  6. Step 6: Final answer
    x = 119,151.56

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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.