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Finding the Fourth Proportional to 151,480.60, 209,058.78 and 91,070.92

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Solution

The fourth proportional to 151,480.60, 209,058.78 and 91,070.92 is: 125,687.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,480.60 : 209,058.78 = 91,070.92 : x
  2. Step 2: Convert to fraction form
    151,480.60/209,058.78 = 91,070.92/x
  3. Step 3: Cross multiply
    151,480.60x = 209,058.78 × 91,070.92
  4. Step 4: Simplify right side
    151,480.60x = 19,039,175,428.68
  5. Step 5: Solve for x
    x = 19,039,175,428.68/151,480.60
  6. Step 6: Final answer
    x = 125,687.22

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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.