Home / 157,743.40-217,684.76-86,123.43

Finding the Fourth Proportional to 157,743.40, 217,684.76 and 86,123.43

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Solution

The fourth proportional to 157,743.40, 217,684.76 and 86,123.43 is: 118,849.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,743.40 : 217,684.76 = 86,123.43 : x
  2. Step 2: Convert to fraction form
    157,743.40/217,684.76 = 86,123.43/x
  3. Step 3: Cross multiply
    157,743.40x = 217,684.76 × 86,123.43
  4. Step 4: Simplify right side
    157,743.40x = 18,747,756,670.89
  5. Step 5: Solve for x
    x = 18,747,756,670.89/157,743.40
  6. Step 6: Final answer
    x = 118,849.71

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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.