Home / 130,416.21-179,975.12-76,703.49

Finding the Fourth Proportional to 130,416.21, 179,975.12 and 76,703.49

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Solution

The fourth proportional to 130,416.21, 179,975.12 and 76,703.49 is: 105,851.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,416.21 : 179,975.12 = 76,703.49 : x
  2. Step 2: Convert to fraction form
    130,416.21/179,975.12 = 76,703.49/x
  3. Step 3: Cross multiply
    130,416.21x = 179,975.12 × 76,703.49
  4. Step 4: Simplify right side
    130,416.21x = 13,804,719,433.65
  5. Step 5: Solve for x
    x = 13,804,719,433.65/130,416.21
  6. Step 6: Final answer
    x = 105,851.25

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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.