Home / 87,322.10-130,983.15-74,200.10

Finding the Fourth Proportional to 87,322.10, 130,983.15 and 74,200.10

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Solution

The fourth proportional to 87,322.10, 130,983.15 and 74,200.10 is: 111,300.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,322.10 : 130,983.15 = 74,200.10 : x
  2. Step 2: Convert to fraction form
    87,322.10/130,983.15 = 74,200.10/x
  3. Step 3: Cross multiply
    87,322.10x = 130,983.15 × 74,200.10
  4. Step 4: Simplify right side
    87,322.10x = 9,718,962,828.32
  5. Step 5: Solve for x
    x = 9,718,962,828.32/87,322.10
  6. Step 6: Final answer
    x = 111,300.15

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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.