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Finding the Fourth Proportional to 145,991.70, 218,987.55 and 110,999.70

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Solution

The fourth proportional to 145,991.70, 218,987.55 and 110,999.70 is: 166,499.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,991.70 : 218,987.55 = 110,999.70 : x
  2. Step 2: Convert to fraction form
    145,991.70/218,987.55 = 110,999.70/x
  3. Step 3: Cross multiply
    145,991.70x = 218,987.55 × 110,999.70
  4. Step 4: Simplify right side
    145,991.70x = 24,307,552,353.74
  5. Step 5: Solve for x
    x = 24,307,552,353.74/145,991.70
  6. Step 6: Final answer
    x = 166,499.55

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.