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Finding the Fourth Proportional to 151,446.54, 208,959.53 and 86,020.82

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Solution

The fourth proportional to 151,446.54, 208,959.53 and 86,020.82 is: 118,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,446.54 : 208,959.53 = 86,020.82 : x
  2. Step 2: Convert to fraction form
    151,446.54/208,959.53 = 86,020.82/x
  3. Step 3: Cross multiply
    151,446.54x = 208,959.53 × 86,020.82
  4. Step 4: Simplify right side
    151,446.54x = 17,974,868,642.51
  5. Step 5: Solve for x
    x = 17,974,868,642.51/151,446.54
  6. Step 6: Final answer
    x = 118,687.88

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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.