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Finding the Fourth Proportional to 151,464.87, 208,963.40 and 91,050.21

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Solution

The fourth proportional to 151,464.87, 208,963.40 and 91,050.21 is: 125,614.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,464.87 : 208,963.40 = 91,050.21 : x
  2. Step 2: Convert to fraction form
    151,464.87/208,963.40 = 91,050.21/x
  3. Step 3: Cross multiply
    151,464.87x = 208,963.40 × 91,050.21
  4. Step 4: Simplify right side
    151,464.87x = 19,026,160,997.06
  5. Step 5: Solve for x
    x = 19,026,160,997.06/151,464.87
  6. Step 6: Final answer
    x = 125,614.35

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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.