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Finding the Fourth Proportional to 158,425.96, 218,627.70 and 86,810.44

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Solution

The fourth proportional to 158,425.96, 218,627.70 and 86,810.44 is: 119,798.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,425.96 : 218,627.70 = 86,810.44 : x
  2. Step 2: Convert to fraction form
    158,425.96/218,627.70 = 86,810.44/x
  3. Step 3: Cross multiply
    158,425.96x = 218,627.70 × 86,810.44
  4. Step 4: Simplify right side
    158,425.96x = 18,979,166,833.19
  5. Step 5: Solve for x
    x = 18,979,166,833.19/158,425.96
  6. Step 6: Final answer
    x = 119,798.34

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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.