Home / 120,815.48-166,713.18-70,543.64

Finding the Fourth Proportional to 120,815.48, 166,713.18 and 70,543.64

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Solution

The fourth proportional to 120,815.48, 166,713.18 and 70,543.64 is: 97,343.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,815.48 : 166,713.18 = 70,543.64 : x
  2. Step 2: Convert to fraction form
    120,815.48/166,713.18 = 70,543.64/x
  3. Step 3: Cross multiply
    120,815.48x = 166,713.18 × 70,543.64
  4. Step 4: Simplify right side
    120,815.48x = 11,760,554,553.18
  5. Step 5: Solve for x
    x = 11,760,554,553.18/120,815.48
  6. Step 6: Final answer
    x = 97,343.11

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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.