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Finding the Fourth Proportional to 116,777.88, 161,165.39 and 71,485.79

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Solution

The fourth proportional to 116,777.88, 161,165.39 and 71,485.79 is: 98,657.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,777.88 : 161,165.39 = 71,485.79 : x
  2. Step 2: Convert to fraction form
    116,777.88/161,165.39 = 71,485.79/x
  3. Step 3: Cross multiply
    116,777.88x = 161,165.39 × 71,485.79
  4. Step 4: Simplify right side
    116,777.88x = 11,521,034,061.55
  5. Step 5: Solve for x
    x = 11,521,034,061.55/116,777.88
  6. Step 6: Final answer
    x = 98,657.67

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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.