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Finding the Fourth Proportional to 158,335.58, 218,503.44 and 85,739.28

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Solution

The fourth proportional to 158,335.58, 218,503.44 and 85,739.28 is: 118,320.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,335.58 : 218,503.44 = 85,739.28 : x
  2. Step 2: Convert to fraction form
    158,335.58/218,503.44 = 85,739.28/x
  3. Step 3: Cross multiply
    158,335.58x = 218,503.44 × 85,739.28
  4. Step 4: Simplify right side
    158,335.58x = 18,734,327,623.12
  5. Step 5: Solve for x
    x = 18,734,327,623.12/158,335.58
  6. Step 6: Final answer
    x = 118,320.39

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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.