Home / 151,223.85-208,708.79-86,718.33

Finding the Fourth Proportional to 151,223.85, 208,708.79 and 86,718.33

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Solution

The fourth proportional to 151,223.85, 208,708.79 and 86,718.33 is: 119,682.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,223.85 : 208,708.79 = 86,718.33 : x
  2. Step 2: Convert to fraction form
    151,223.85/208,708.79 = 86,718.33/x
  3. Step 3: Cross multiply
    151,223.85x = 208,708.79 × 86,718.33
  4. Step 4: Simplify right side
    151,223.85x = 18,098,877,291.53
  5. Step 5: Solve for x
    x = 18,098,877,291.53/151,223.85
  6. Step 6: Final answer
    x = 119,682.69

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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.