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Finding the Fourth Proportional to 151,655.76, 209,287.08 and 83,675.70

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Solution

The fourth proportional to 151,655.76, 209,287.08 and 83,675.70 is: 115,473.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,655.76 : 209,287.08 = 83,675.70 : x
  2. Step 2: Convert to fraction form
    151,655.76/209,287.08 = 83,675.70/x
  3. Step 3: Cross multiply
    151,655.76x = 209,287.08 × 83,675.70
  4. Step 4: Simplify right side
    151,655.76x = 17,512,242,919.96
  5. Step 5: Solve for x
    x = 17,512,242,919.96/151,655.76
  6. Step 6: Final answer
    x = 115,473.64

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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.