Home / 105,110.28-145,052.12-67,384.52

Finding the Fourth Proportional to 105,110.28, 145,052.12 and 67,384.52

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Solution

The fourth proportional to 105,110.28, 145,052.12 and 67,384.52 is: 92,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,110.28 : 145,052.12 = 67,384.52 : x
  2. Step 2: Convert to fraction form
    105,110.28/145,052.12 = 67,384.52/x
  3. Step 3: Cross multiply
    105,110.28x = 145,052.12 × 67,384.52
  4. Step 4: Simplify right side
    105,110.28x = 9,774,267,481.18
  5. Step 5: Solve for x
    x = 9,774,267,481.18/105,110.28
  6. Step 6: Final answer
    x = 92,990.60

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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.