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Finding the Fourth Proportional to 153,135.97, 211,329 and 84,226.79

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Solution

The fourth proportional to 153,135.97, 211,329 and 84,226.79 is: 116,233.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,135.97 : 211,329 = 84,226.79 : x
  2. Step 2: Convert to fraction form
    153,135.97/211,329 = 84,226.79/x
  3. Step 3: Cross multiply
    153,135.97x = 211,329 × 84,226.79
  4. Step 4: Simplify right side
    153,135.97x = 17,799,563,832.23
  5. Step 5: Solve for x
    x = 17,799,563,832.23/153,135.97
  6. Step 6: Final answer
    x = 116,233.72

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1.5x scale

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.