Home / 103,208.30-142,440.63-60,770.78

Finding the Fourth Proportional to 103,208.30, 142,440.63 and 60,770.78

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Solution

The fourth proportional to 103,208.30, 142,440.63 and 60,770.78 is: 83,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,208.30 : 142,440.63 = 60,770.78 : x
  2. Step 2: Convert to fraction form
    103,208.30/142,440.63 = 60,770.78/x
  3. Step 3: Cross multiply
    103,208.30x = 142,440.63 × 60,770.78
  4. Step 4: Simplify right side
    103,208.30x = 8,656,228,188.79
  5. Step 5: Solve for x
    x = 8,656,228,188.79/103,208.30
  6. Step 6: Final answer
    x = 83,871.43

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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.