Home / 87,157.80-130,721-23,116.40

Finding the Fourth Proportional to 87,157.80, 130,721 and 23,116.40

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Solution

The fourth proportional to 87,157.80, 130,721 and 23,116.40 is: 34,670.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,157.80 : 130,721 = 23,116.40 : x
  2. Step 2: Convert to fraction form
    87,157.80/130,721 = 23,116.40/x
  3. Step 3: Cross multiply
    87,157.80x = 130,721 × 23,116.40
  4. Step 4: Simplify right side
    87,157.80x = 3,021,798,924.40
  5. Step 5: Solve for x
    x = 3,021,798,924.40/87,157.80
  6. Step 6: Final answer
    x = 34,670.44

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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.