Home / 90,172.66-135,282.06-52,764.20

Finding the Fourth Proportional to 90,172.66, 135,282.06 and 52,764.20

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Solution

The fourth proportional to 90,172.66, 135,282.06 and 52,764.20 is: 79,159.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,172.66 : 135,282.06 = 52,764.20 : x
  2. Step 2: Convert to fraction form
    90,172.66/135,282.06 = 52,764.20/x
  3. Step 3: Cross multiply
    90,172.66x = 135,282.06 × 52,764.20
  4. Step 4: Simplify right side
    90,172.66x = 7,138,049,670.25
  5. Step 5: Solve for x
    x = 7,138,049,670.25/90,172.66
  6. Step 6: Final answer
    x = 79,159.80

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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.