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Finding the Fourth Proportional to 151,995.60, 209,747.40 and 84,009.06

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Solution

The fourth proportional to 151,995.60, 209,747.40 and 84,009.06 is: 115,928.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,995.60 : 209,747.40 = 84,009.06 : x
  2. Step 2: Convert to fraction form
    151,995.60/209,747.40 = 84,009.06/x
  3. Step 3: Cross multiply
    151,995.60x = 209,747.40 × 84,009.06
  4. Step 4: Simplify right side
    151,995.60x = 17,620,681,911.44
  5. Step 5: Solve for x
    x = 17,620,681,911.44/151,995.60
  6. Step 6: Final answer
    x = 115,928.89

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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.