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Finding the Fourth Proportional to 130,345.80, 195,525.10 and 68,137.80

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Solution

The fourth proportional to 130,345.80, 195,525.10 and 68,137.80 is: 102,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,345.80 : 195,525.10 = 68,137.80 : x
  2. Step 2: Convert to fraction form
    130,345.80/195,525.10 = 68,137.80/x
  3. Step 3: Cross multiply
    130,345.80x = 195,525.10 × 68,137.80
  4. Step 4: Simplify right side
    130,345.80x = 13,322,650,158.78
  5. Step 5: Solve for x
    x = 13,322,650,158.78/130,345.80
  6. Step 6: Final answer
    x = 102,210.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.