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Finding the Fourth Proportional to 116,891.90, 161,369.48 and 76,667.30

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Solution

The fourth proportional to 116,891.90, 161,369.48 and 76,667.30 is: 105,839.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,891.90 : 161,369.48 = 76,667.30 : x
  2. Step 2: Convert to fraction form
    116,891.90/161,369.48 = 76,667.30/x
  3. Step 3: Cross multiply
    116,891.90x = 161,369.48 × 76,667.30
  4. Step 4: Simplify right side
    116,891.90x = 12,371,762,334.00
  5. Step 5: Solve for x
    x = 12,371,762,334.00/116,891.90
  6. Step 6: Final answer
    x = 105,839.35

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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.