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Finding the Fourth Proportional to 153,401.43, 211,643.24 and 89,694.12

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Solution

The fourth proportional to 153,401.43, 211,643.24 and 89,694.12 is: 123,748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,401.43 : 211,643.24 = 89,694.12 : x
  2. Step 2: Convert to fraction form
    153,401.43/211,643.24 = 89,694.12/x
  3. Step 3: Cross multiply
    153,401.43x = 211,643.24 × 89,694.12
  4. Step 4: Simplify right side
    153,401.43x = 18,983,153,717.28
  5. Step 5: Solve for x
    x = 18,983,153,717.28/153,401.43
  6. Step 6: Final answer
    x = 123,748.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.