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Finding the Fourth Proportional to 103,188.66, 142,347.91 and 67,399.62

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Solution

The fourth proportional to 103,188.66, 142,347.91 and 67,399.62 is: 92,977.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,188.66 : 142,347.91 = 67,399.62 : x
  2. Step 2: Convert to fraction form
    103,188.66/142,347.91 = 67,399.62/x
  3. Step 3: Cross multiply
    103,188.66x = 142,347.91 × 67,399.62
  4. Step 4: Simplify right side
    103,188.66x = 9,594,195,041.79
  5. Step 5: Solve for x
    x = 9,594,195,041.79/103,188.66
  6. Step 6: Final answer
    x = 92,977.22

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1.5x scale

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.