Home / 138,077.40-190,552.29-77,647.74

Finding the Fourth Proportional to 138,077.40, 190,552.29 and 77,647.74

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Solution

The fourth proportional to 138,077.40, 190,552.29 and 77,647.74 is: 107,156.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,077.40 : 190,552.29 = 77,647.74 : x
  2. Step 2: Convert to fraction form
    138,077.40/190,552.29 = 77,647.74/x
  3. Step 3: Cross multiply
    138,077.40x = 190,552.29 × 77,647.74
  4. Step 4: Simplify right side
    138,077.40x = 14,795,954,670.32
  5. Step 5: Solve for x
    x = 14,795,954,670.32/138,077.40
  6. Step 6: Final answer
    x = 107,156.96

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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.