Home / 90,729.02-136,104.47-38,131.67

Finding the Fourth Proportional to 90,729.02, 136,104.47 and 38,131.67

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Solution

The fourth proportional to 90,729.02, 136,104.47 and 38,131.67 is: 57,202.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,729.02 : 136,104.47 = 38,131.67 : x
  2. Step 2: Convert to fraction form
    90,729.02/136,104.47 = 38,131.67/x
  3. Step 3: Cross multiply
    90,729.02x = 136,104.47 × 38,131.67
  4. Step 4: Simplify right side
    90,729.02x = 5,189,889,864.38
  5. Step 5: Solve for x
    x = 5,189,889,864.38/90,729.02
  6. Step 6: Final answer
    x = 57,202.10

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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.