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Finding the Fourth Proportional to 130,394.88, 180,034.56 and 88,012.80

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Solution

The fourth proportional to 130,394.88, 180,034.56 and 88,012.80 is: 121,518.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,394.88 : 180,034.56 = 88,012.80 : x
  2. Step 2: Convert to fraction form
    130,394.88/180,034.56 = 88,012.80/x
  3. Step 3: Cross multiply
    130,394.88x = 180,034.56 × 88,012.80
  4. Step 4: Simplify right side
    130,394.88x = 15,845,345,722.37
  5. Step 5: Solve for x
    x = 15,845,345,722.37/130,394.88
  6. Step 6: Final answer
    x = 121,518.16

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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.