Home / 130,422.82-179,971.04-103,630.18

Finding the Fourth Proportional to 130,422.82, 179,971.04 and 103,630.18

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Solution

The fourth proportional to 130,422.82, 179,971.04 and 103,630.18 is: 142,999.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,422.82 : 179,971.04 = 103,630.18 : x
  2. Step 2: Convert to fraction form
    130,422.82/179,971.04 = 103,630.18/x
  3. Step 3: Cross multiply
    130,422.82x = 179,971.04 × 103,630.18
  4. Step 4: Simplify right side
    130,422.82x = 18,650,431,269.99
  5. Step 5: Solve for x
    x = 18,650,431,269.99/130,422.82
  6. Step 6: Final answer
    x = 142,999.75

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1.5x scale

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.