Home / 138,256.98-190,792.51-77,827.43

Finding the Fourth Proportional to 138,256.98, 190,792.51 and 77,827.43

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Solution

The fourth proportional to 138,256.98, 190,792.51 and 77,827.43 is: 107,400.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,256.98 : 190,792.51 = 77,827.43 : x
  2. Step 2: Convert to fraction form
    138,256.98/190,792.51 = 77,827.43/x
  3. Step 3: Cross multiply
    138,256.98x = 190,792.51 × 77,827.43
  4. Step 4: Simplify right side
    138,256.98x = 14,848,891,436.74
  5. Step 5: Solve for x
    x = 14,848,891,436.74/138,256.98
  6. Step 6: Final answer
    x = 107,400.67

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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.