Home / 103,187.66-142,346.53-67,398.62

Finding the Fourth Proportional to 103,187.66, 142,346.53 and 67,398.62

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Solution

The fourth proportional to 103,187.66, 142,346.53 and 67,398.62 is: 92,975.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,187.66 : 142,346.53 = 67,398.62 : x
  2. Step 2: Convert to fraction form
    103,187.66/142,346.53 = 67,398.62/x
  3. Step 3: Cross multiply
    103,187.66x = 142,346.53 × 67,398.62
  4. Step 4: Simplify right side
    103,187.66x = 9,593,959,683.79
  5. Step 5: Solve for x
    x = 9,593,959,683.79/103,187.66
  6. Step 6: Final answer
    x = 92,975.84

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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.