Home / 129,181.04-178,261.48-75,481.20

Finding the Fourth Proportional to 129,181.04, 178,261.48 and 75,481.20

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Solution

The fourth proportional to 129,181.04, 178,261.48 and 75,481.20 is: 104,159.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,181.04 : 178,261.48 = 75,481.20 : x
  2. Step 2: Convert to fraction form
    129,181.04/178,261.48 = 75,481.20/x
  3. Step 3: Cross multiply
    129,181.04x = 178,261.48 × 75,481.20
  4. Step 4: Simplify right side
    129,181.04x = 13,455,390,424.18
  5. Step 5: Solve for x
    x = 13,455,390,424.18/129,181.04
  6. Step 6: Final answer
    x = 104,159.17

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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.