Home / 149,093.40-205,749-85,468.20

Finding the Fourth Proportional to 149,093.40, 205,749 and 85,468.20

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Solution

The fourth proportional to 149,093.40, 205,749 and 85,468.20 is: 117,946.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,093.40 : 205,749 = 85,468.20 : x
  2. Step 2: Convert to fraction form
    149,093.40/205,749 = 85,468.20/x
  3. Step 3: Cross multiply
    149,093.40x = 205,749 × 85,468.20
  4. Step 4: Simplify right side
    149,093.40x = 17,584,996,681.80
  5. Step 5: Solve for x
    x = 17,584,996,681.80/149,093.40
  6. Step 6: Final answer
    x = 117,946.18

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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.