Home / 138,256.81-190,792.28-77,827.26

Finding the Fourth Proportional to 138,256.81, 190,792.28 and 77,827.26

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Solution

The fourth proportional to 138,256.81, 190,792.28 and 77,827.26 is: 107,400.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,256.81 : 190,792.28 = 77,827.26 : x
  2. Step 2: Convert to fraction form
    138,256.81/190,792.28 = 77,827.26/x
  3. Step 3: Cross multiply
    138,256.81x = 190,792.28 × 77,827.26
  4. Step 4: Simplify right side
    138,256.81x = 14,848,839,992.42
  5. Step 5: Solve for x
    x = 14,848,839,992.42/138,256.81
  6. Step 6: Final answer
    x = 107,400.43

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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.