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Finding the Fourth Proportional to 130,807.80, 196,211.70 and 129,058.20

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Solution

The fourth proportional to 130,807.80, 196,211.70 and 129,058.20 is: 193,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,807.80 : 196,211.70 = 129,058.20 : x
  2. Step 2: Convert to fraction form
    130,807.80/196,211.70 = 129,058.20/x
  3. Step 3: Cross multiply
    130,807.80x = 196,211.70 × 129,058.20
  4. Step 4: Simplify right side
    130,807.80x = 25,322,728,820.94
  5. Step 5: Solve for x
    x = 25,322,728,820.94/130,807.80
  6. Step 6: Final answer
    x = 193,587.30

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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.