Home / 129,837.79-179,206.01-76,140.10

Finding the Fourth Proportional to 129,837.79, 179,206.01 and 76,140.10

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Solution

The fourth proportional to 129,837.79, 179,206.01 and 76,140.10 is: 105,090.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,837.79 : 179,206.01 = 76,140.10 : x
  2. Step 2: Convert to fraction form
    129,837.79/179,206.01 = 76,140.10/x
  3. Step 3: Cross multiply
    129,837.79x = 179,206.01 × 76,140.10
  4. Step 4: Simplify right side
    129,837.79x = 13,644,763,522.00
  5. Step 5: Solve for x
    x = 13,644,763,522.00/129,837.79
  6. Step 6: Final answer
    x = 105,090.85

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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.