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Finding the Fourth Proportional to 151,223.60, 208,708.44 and 86,718.08

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Solution

The fourth proportional to 151,223.60, 208,708.44 and 86,718.08 is: 119,682.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,223.60 : 208,708.44 = 86,718.08 : x
  2. Step 2: Convert to fraction form
    151,223.60/208,708.44 = 86,718.08/x
  3. Step 3: Cross multiply
    151,223.60x = 208,708.44 × 86,718.08
  4. Step 4: Simplify right side
    151,223.60x = 18,098,795,196.60
  5. Step 5: Solve for x
    x = 18,098,795,196.60/151,223.60
  6. Step 6: Final answer
    x = 119,682.35

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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.