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Finding the Fourth Proportional to 149,971.98, 225,014.80 and 90,042.32

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Solution

The fourth proportional to 149,971.98, 225,014.80 and 90,042.32 is: 135,097.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,971.98 : 225,014.80 = 90,042.32 : x
  2. Step 2: Convert to fraction form
    149,971.98/225,014.80 = 90,042.32/x
  3. Step 3: Cross multiply
    149,971.98x = 225,014.80 × 90,042.32
  4. Step 4: Simplify right side
    149,971.98x = 20,260,854,626.34
  5. Step 5: Solve for x
    x = 20,260,854,626.34/149,971.98
  6. Step 6: Final answer
    x = 135,097.60

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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.