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Finding the Fourth Proportional to 235,995.49, 353,780.67 and 86,130.62

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Solution

The fourth proportional to 235,995.49, 353,780.67 and 86,130.62 is: 129,118.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,995.49 : 353,780.67 = 86,130.62 : x
  2. Step 2: Convert to fraction form
    235,995.49/353,780.67 = 86,130.62/x
  3. Step 3: Cross multiply
    235,995.49x = 353,780.67 × 86,130.62
  4. Step 4: Simplify right side
    235,995.49x = 30,471,348,451.12
  5. Step 5: Solve for x
    x = 30,471,348,451.12/235,995.49
  6. Step 6: Final answer
    x = 129,118.35

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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.