Home / 120,988.96-166,953.36-112,072.48

Finding the Fourth Proportional to 120,988.96, 166,953.36 and 112,072.48

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Solution

The fourth proportional to 120,988.96, 166,953.36 and 112,072.48 is: 154,649.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,988.96 : 166,953.36 = 112,072.48 : x
  2. Step 2: Convert to fraction form
    120,988.96/166,953.36 = 112,072.48/x
  3. Step 3: Cross multiply
    120,988.96x = 166,953.36 × 112,072.48
  4. Step 4: Simplify right side
    120,988.96x = 18,710,877,099.53
  5. Step 5: Solve for x
    x = 18,710,877,099.53/120,988.96
  6. Step 6: Final answer
    x = 154,649.46

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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.