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Finding the Fourth Proportional to 130,800.60, 180,525.06 and 77,103

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Solution

The fourth proportional to 130,800.60, 180,525.06 and 77,103 is: 106,414.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,800.60 : 180,525.06 = 77,103 : x
  2. Step 2: Convert to fraction form
    130,800.60/180,525.06 = 77,103/x
  3. Step 3: Cross multiply
    130,800.60x = 180,525.06 × 77,103
  4. Step 4: Simplify right side
    130,800.60x = 13,919,023,701.18
  5. Step 5: Solve for x
    x = 13,919,023,701.18/130,800.60
  6. Step 6: Final answer
    x = 106,414.07

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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.