Home / 138,202.60-190,714.98-77,774.44

Finding the Fourth Proportional to 138,202.60, 190,714.98 and 77,774.44

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Solution

The fourth proportional to 138,202.60, 190,714.98 and 77,774.44 is: 107,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,202.60 : 190,714.98 = 77,774.44 : x
  2. Step 2: Convert to fraction form
    138,202.60/190,714.98 = 77,774.44/x
  3. Step 3: Cross multiply
    138,202.60x = 190,714.98 × 77,774.44
  4. Step 4: Simplify right side
    138,202.60x = 14,832,750,769.11
  5. Step 5: Solve for x
    x = 14,832,750,769.11/138,202.60
  6. Step 6: Final answer
    x = 107,326.13

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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.