Home / 102,964.57-142,108.11-70,672.66

Finding the Fourth Proportional to 102,964.57, 142,108.11 and 70,672.66

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Solution

The fourth proportional to 102,964.57, 142,108.11 and 70,672.66 is: 97,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,964.57 : 142,108.11 = 70,672.66 : x
  2. Step 2: Convert to fraction form
    102,964.57/142,108.11 = 70,672.66/x
  3. Step 3: Cross multiply
    102,964.57x = 142,108.11 × 70,672.66
  4. Step 4: Simplify right side
    102,964.57x = 10,043,158,717.87
  5. Step 5: Solve for x
    x = 10,043,158,717.87/102,964.57
  6. Step 6: Final answer
    x = 97,539.94

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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.