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Finding the Fourth Proportional to 87,208.20, 130,520.70 and 60,964.20

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Solution

The fourth proportional to 87,208.20, 130,520.70 and 60,964.20 is: 91,242.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,208.20 : 130,520.70 = 60,964.20 : x
  2. Step 2: Convert to fraction form
    87,208.20/130,520.70 = 60,964.20/x
  3. Step 3: Cross multiply
    87,208.20x = 130,520.70 × 60,964.20
  4. Step 4: Simplify right side
    87,208.20x = 7,957,090,058.94
  5. Step 5: Solve for x
    x = 7,957,090,058.94/87,208.20
  6. Step 6: Final answer
    x = 91,242.45

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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.