Home / 105,247.38-157,103.30-91,961.22

Finding the Fourth Proportional to 105,247.38, 157,103.30 and 91,961.22

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Solution

The fourth proportional to 105,247.38, 157,103.30 and 91,961.22 is: 137,270.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,247.38 : 157,103.30 = 91,961.22 : x
  2. Step 2: Convert to fraction form
    105,247.38/157,103.30 = 91,961.22/x
  3. Step 3: Cross multiply
    105,247.38x = 157,103.30 × 91,961.22
  4. Step 4: Simplify right side
    105,247.38x = 14,447,411,134.03
  5. Step 5: Solve for x
    x = 14,447,411,134.03/105,247.38
  6. Step 6: Final answer
    x = 137,270.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.