Home / 138,784.53-191,522.25-75,122.16

Finding the Fourth Proportional to 138,784.53, 191,522.25 and 75,122.16

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Solution

The fourth proportional to 138,784.53, 191,522.25 and 75,122.16 is: 103,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,784.53 : 191,522.25 = 75,122.16 : x
  2. Step 2: Convert to fraction form
    138,784.53/191,522.25 = 75,122.16/x
  3. Step 3: Cross multiply
    138,784.53x = 191,522.25 × 75,122.16
  4. Step 4: Simplify right side
    138,784.53x = 14,387,565,108.06
  5. Step 5: Solve for x
    x = 14,387,565,108.06/138,784.53
  6. Step 6: Final answer
    x = 103,668.36

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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.